I’ve got the TSP kit with the high compression head (I ride 5,000 ft +) on my 2021 TX300i and it’s amazing how smooth the power delivery is. The bike immediately sounds different on startup, I would describe it as a more refined sound if that makes any sense. The power is thicker and stronger in the low to mid range, but there is no perceptible hit when the power valve begins to open. It feels like an electric motor, just a constant smooth increase in power. I have not installed the air screw mod. No need as it idles perfect and is super crisp on the bottom end. TSP says 80% of the people who install their kits report no need to do the air screw mod.
I've tried both on my KTM. The TSP head makes the bike feel electric. Much easier to ride IMO. The RK Tek head had a hit when the power valve opened. Pretty fun if you're in good shape and can hold on.
Thanks for keeping it short and sweet. Perhaps when you get the medium comp you can show us in which scenario's they differ and how🤘. Keep the content coming.
Love the vids Rich! Just a suggestion, it wouldn’t hurt to throw up some sound deadening in your recording room, would cut down on the echo and up the production value a smidge!
Do you have compression numbers from stock vs the TSP head? Is the TSP "low" compression head actually lower compression than (or roughly the same as) stock, or just low when compared to their medium and high compression options?
I was really hoping to see a comparison dyno chart between the stock setup and the TSP package you installed. I ordered mine today because of your excellent content. Thanks, Rich.
Without doubt the most informative dirt bike/ enduro info channel on TH-cam.. Can’t wait to see the comparisons between Heads, From what I understand, basically, Rich is saying that I will be able to “Tune “ my bike for specific applications by changing out the Heads, for Technical situation. - Low compression head, .... Wide open riding (i.e. Desert racing or moto’s) use the high compression head Will be interesting to see torque curves on the dyno..
Rich, I enjoy your videos. You are reconfiguring the engineering on the engine. 1) Have you spoken with GasGas(KTM) about this mod and why THEY didn't make the bike this way to start with? I have a 2021FE 501 and bought into the "Mod" from another vender, which made the bike perform worse and run louder, against my son-in-law's recommendation. (A former KTM employee) 2) Did you ride the bike with the lower compression head, without the ECU mod? Thank you...Again, I think you do a great job and I aspire to have half of your skills and work at it three times a week, balancing, every day. 3) Do you think slipping the clutch would give you the same effect?
I went the TSP medium comp head and the ECU remap on my 2020 KTM 300 and also did the idle screw mod. All made a huge difference imo. 100% worth it. Awesome video cant wait for the dyno video.
What made you choose the medium over low or high? I'm about to pull the trigger and I'm still hesitant between the 3 different heads. I was told that the compression ratio didn't really have anything to do with the smoothness but rather the remapping. I ride between 0 and 1500ft so elevation isn't a problem. I ride more the single, gnarly, hard Enduro type than anything else but don't mind the occasional wide open double track transits. I'm looking for help in choosing.
@@crazybalony I ride exactly the same I live near Dave the owner of TSP so I just went in and ask him which one he suggested for my riding and he said definitely medium comp head. Fyi.
Rich could you tell us before and after average fuel economy? Obviously everyone will see different overall mpg. But it should be an indicator of percentage. Great video
I put a TSP high compression head/ecu reflash on my 2020 250xc-w and air screw at 70 hours on bike. My stock bike ran great with air screw at 5 turns out. I found when I started bike after install I needed to turn idle screw in to bring idle up or it would stall and very rich down low. After messing with idle screw I founded getting it to point of to lean then turning it back in a little to richen up idle and adjusting air screw to 3 turns out now my bike flat out rips hard now. Still super smooth but big difference between map 1 and 2. It works and uses more fuel and oil it seems but who cares. Best feeling 250 2 stroke I have road carb or TPI. Very highly recommended so far with 2 hours but do Recommend messing with air screw and idle screw to get the most out of it. Also adjust powervalve to what TSP recommends which I had mine set to what they recommend before I installed kit anyways.
Hello Rich, great vid and info as usual :) I am a new rider currently getting time on bikes on trails here in the UK and doing some enduro with the aim of doing some enduro/hard enduro over the next few years. I saw the TSP performance kit on another vid and felt the smoothness sounds great. wondering if if I should get it asap or learn a bit more its a new 2022 bike 1hr so far :D. My thoughts were get 30-40 hrs on my bike so I can see the difference any opinions be welcome
Rich.Heres hoping that you'r going to disclose the compression numbers between the stock and aftermarket low, med and high head options.Heres a wild guess,160 psi with the aftermarket low comp head showcased in this vid?.
Great video man! Thinking of doing it to my bike.I was just wondering weather Id have to change the computer flash in the future id I decide to go for a different head, or is the flashing a one time thing only
There was nothing wrong with my 2021 ktm 300 I wanted the tsp kit for the extra oil ratio etc, and man did it make a massive difference was very surprised and happy with it
Rich - Love the videos! Question - I did the throttle screw mod and it made a big difference on my KTM300XC 2020. On this mod you did - is there a set position they recommend on power valve, etc or do you have to do a trial and error on that - or is it consistent where that is at along with this mod? Meaning - very easy to set it up and get a great feel? My buddy has the RK Head and his bike felt smooth - he does not have an ECU flash. He has the high compression one. Leaning towards the low compression but may have to wait for your other tests! We are single track/Enduro riders in TX.
TSP do have a recommend power valve setting by measuring. Also a starting point for idle needle and air screw. The powervalve setting seemed right but the idle setting was to low maybe half a turn more and I had to open air screw one extra turn. Bike rips now and my bike a 250 with high compression head
Rich. How did you feel about riding the low comp here in Utah at our elevation? Think the bike still had the lug and power or do you think it was too low and should maybe go with a medium?
As a 🇬🇧 resident, we get treated like leppers when it comes to riding off road, with very little facilities available to us. How does it work stateside? You seem to be able to go anywhere 🤔
Hey! I'm hesitant between the low and med compression head. Have you tried the med yet? I was told that the tractability is rather a direct relation with the remapping than the head.
my high comp head on 17 te250 allowed me to run a gear high at lower rpms. I thought it was an improvement. Now I wonder...? I was afraid it would be stall happy but it's not, hmmm...
I assume the bike would put out more emissions with the flash of the ECU. (I'm not worried) would there be any long term changes to the durability. I know a guy who has a special head on an older carb bike and it takes a lot more work to start the bike.
Even with the tsp mapping Doesn't the Sherco have the best motor for technical riding bc theres so much torque off idle? Appreciate your perspective. Awesome content!
I wouldn't say the Sherco has more torque off idle. The area the bike is able to lug, tractor and hold traction is larger than the stock TPI's. Lots of times these types of comparisons are apples to oranges. Is the Sherco better than the TSP? NO. Is the TSP better than the Sherco? Also No. I like the TPI machines better in certain places, I like the Sherco better in certain places.
@@IRCTireUSAMoto Thanks for the reply Rich! Glad to hear the sherco has no More off idle... I own a ktm tpi, I miss the off idle power of my previous ktm carby although the tpi model has many other improvements in particular the geo/suspension. I've been wondering about the tsp option for awhile, after hearing your thoughts I pulled the trigger...Thanks!
Which IRC tire would you recommend for Intermediate/hard terrain? I live in Yuma, AZ and we have soft sand, some rocky area's, gravel, etc. Thanks for the info!!
This vid rides me further away from desiring a TPI. I’ll stick to my “15” 300 w/ Lectron for at least another year. I’m only at 600 hrs, I question if a TPI could meet that milestone. Completed a recent top/bottom rebuild at 550 hrs.
@@chrispederson4157 You indeed are correct I’m riding with all the time, but most of them can’t come close to chasing me down. I’m not ready to upgrade yet, that’s all 👍
@@chrispederson4157 thanks Chris I appreciate that! Typically about 100-150hrs of ride time a year. We do some long rides up to 100 miles on New England. Lots of single track with fun elevation changes. Lots of Ripping single track trails. Bark busters are absolutely necessary.
I've ridden a few TPI's ( including the GG EC300). None have wanted me to get rid of my well set up 17 250xc with lectron ( I'm in Colorado and love the lectron). I think the Goldilocks bike would be the 19 250/300 xc which has the latest frame which I like but still carb'ed and am always looking out for one. If the SX had e start off go with that before a tpi if I was staying orange.
What is the cranking psi of the low head vs the stock. Also what did the squish test out to be. I've found that squish settings and angle is far more important than gaining or loosing 10-15 psi of compression
@@chrispederson4157I have both 21’ and 20’ TPI. Both are XCW’s. I’ve sunk thousands into both bikes to get them to run correctly. Not mentioning the amount of time as well. TSP reflash with medium head on the 21’. TSP injector relocator on the 20’ with Hinson reeds, medium head and both bikes I’ve done up the air screw mod. Neither of them feel as good as my carb bikes. They both stall easier and flame out like 4 strokes when ya don’t want them to the most. They lug decently but not as good as a carb. And the 21’ was a mess when I did the top end. I can send you photos. The bottom end looked like it was overheated and scalded with spider web type look with multiple spots that had burs similar to a grinder strike. I got no dog in the fight man. Just a B class dude trying to get the most advantages I can by having a good running machine. I’m ready to sell both to be honest….ones east coast ones west. I reach for my carb bikes 97% of the time. They feel lighter and more like a damn 2 stroke. Wish I liked the injected bikes more trust me 😂
![[TH] 2024 PMGC League | Survival Stage วันที่ 1 | PUBG MOBILE Global Championship](http://i.ytimg.com/vi/FVFT-PFwU80/mqdefault.jpg)
Its always like Christmas when you open up new parts for your bike.
Christmas seems to never end in that regard
I’ve got the TSP kit with the high compression head (I ride 5,000 ft +) on my 2021 TX300i and it’s amazing how smooth the power delivery is. The bike immediately sounds different on startup, I would describe it as a more refined sound if that makes any sense. The power is thicker and stronger in the low to mid range, but there is no perceptible hit when the power valve begins to open. It feels like an electric motor, just a constant smooth increase in power. I have not installed the air screw mod. No need as it idles perfect and is super crisp on the bottom end. TSP says 80% of the people who install their kits report no need to do the air screw mod.
I'm loving mine!
EXCELLENT VID as usual...I think for most novice 2 stroke owners the lower compression head is a WIN WIN 🏁
It would be interesting to test this head compared to an RK tech head.
I've tried both on my KTM. The TSP head makes the bike feel electric. Much easier to ride IMO. The RK Tek head had a hit when the power valve opened. Pretty fun if you're in good shape and can hold on.
Thanks for keeping it short and sweet. Perhaps when you get the medium comp you can show us in which scenario's they differ and how🤘. Keep the content coming.
Love the vids Rich! Just a suggestion, it wouldn’t hurt to throw up some sound deadening in your recording room, would cut down on the echo and up the production value a smidge!
I'm just glad they're finally using a mic.
Do you have compression numbers from stock vs the TSP head? Is the TSP "low" compression head actually lower compression than (or roughly the same as) stock, or just low when compared to their medium and high compression options?
It’s gonna be interesting how the dyno numbers come out. Thanks for your time and efforts Mr. Larson.
thats so cool that tsp is now in the states , Dave is awesome , customer service is next to none , thats why i always buy my rebuild kits though him !
Very interesting content, hope you keep on this track, along with the riding tips of course.
That's the plan!
Good info! I've been eyeballing TSP for a year now
Soon as I saw the notification I had to watch. Great Video.
Awesome! Thank you for the support!
I was really hoping to see a comparison dyno chart between the stock setup and the TSP package you installed. I ordered mine today because of your excellent content. Thanks, Rich.
Next week. Thanks for the support.
Watching you ride is inspiring Love the videos
Thank you Rich. Very informative. I appreciate all your videos.
Without doubt the most informative dirt bike/ enduro info channel on TH-cam..
Can’t wait to see the comparisons between Heads,
From what I understand, basically, Rich is saying that I will be able to “Tune “ my bike for specific applications by changing out the Heads, for Technical situation. - Low compression head, .... Wide open riding (i.e. Desert racing or moto’s) use the high compression head
Will be interesting to see torque curves on the dyno..
Rich, I enjoy your videos. You are reconfiguring the engineering on the engine. 1) Have you spoken with GasGas(KTM) about this mod and why THEY didn't make the bike this way to start with? I have a 2021FE 501 and bought into the "Mod" from another vender, which made the bike perform worse and run louder, against my son-in-law's recommendation. (A former KTM employee) 2) Did you ride the bike with the lower compression head, without the ECU mod? Thank you...Again, I think you do a great job and I aspire to have half of your skills and work at it three times a week, balancing, every day. 3) Do you think slipping the clutch would give you the same effect?
Interesting topic, Rich. Thanks for the insight!
I went the TSP medium comp head and the ECU remap on my 2020 KTM 300 and also did the idle screw mod. All made a huge difference imo. 100% worth it. Awesome video cant wait for the dyno video.
Glad it was worth it!
What made you choose the medium over low or high? I'm about to pull the trigger and I'm still hesitant between the 3 different heads.
I was told that the compression ratio didn't really have anything to do with the smoothness but rather the remapping.
I ride between 0 and 1500ft so elevation isn't a problem. I ride more the single, gnarly, hard Enduro type than anything else but don't mind the occasional wide open double track transits.
I'm looking for help in choosing.
@@crazybalony I ride exactly the same I live near Dave the owner of TSP so I just went in and ask him which one he suggested for my riding and he said definitely medium comp head. Fyi.
@@Cee-FJedi I just feel like there's a reason why Rick went with the low comp option.
I'd like to see Rich field test the air cooled 230s and 250s on the market. Let's see what those bikes can do in expert hands!
You always test/tell us everything I wanna hear.
Good stuff, you have a unique combination of EXPERT hard enduro skills, and a dyno to work with for hard data.
I appreciate that!
Whiting for the dyno numbers!👌
I always wondered why people go higher compression on the head for enduro.. I like the smooth power of my YZ250X with lower compression.
More bottom end to mid range hit also the 125x has a horrendous squish which makes it hard to tune and other issues
4:50 The good speech about what is efficient and necessary. Thanks Rich. Is it necessary to remap when you change the piston ? 🧐
The tootsie pop sold me!!!
Rich could you tell us before and after average fuel economy? Obviously everyone will see different overall mpg. But it should be an indicator of percentage. Great video
Waiting for the Dyno video 👏🏻👏🏻👏🏻
Chears from Argentina 🇦🇷
coming soon!
I put a TSP high compression head/ecu reflash on my 2020 250xc-w and air screw at 70 hours on bike. My stock bike ran great with air screw at 5 turns out. I found when I started bike after install I needed to turn idle screw in to bring idle up or it would stall and very rich down low. After messing with idle screw I founded getting it to point of to lean then turning it back in a little to richen up idle and adjusting air screw to 3 turns out now my bike flat out rips hard now. Still super smooth but big difference between map 1 and 2. It works and uses more fuel and oil it seems but who cares. Best feeling 250 2 stroke I have road carb or TPI. Very highly recommended so far with 2 hours but do Recommend messing with air screw and idle screw to get the most out of it. Also adjust powervalve to what TSP recommends which I had mine set to what they recommend before I installed kit anyways.
Glad its working!
Hello Rich, great vid and info as usual :) I am a new rider currently getting time on bikes on trails here in the UK and doing some enduro with the aim of doing some enduro/hard enduro over the next few years. I saw the TSP performance kit on another vid and felt the smoothness sounds great. wondering if if I should get it asap or learn a bit more its a new 2022 bike 1hr so far :D. My thoughts were get 30-40 hrs on my bike so I can see the difference any opinions be welcome
I’ve been thinking on getting this kit. Great information as always rich 👍
Glad to help!
Amazing the subjects you thrash out wow...and dyno testing..wow
Thank you for the support!
Rich.Heres hoping that you'r going to disclose the compression numbers between the stock and aftermarket low, med and high head options.Heres a wild guess,160 psi with the aftermarket low comp head showcased in this vid?.
Need that for sure !!!
By far the coolest and most informative video review. If only I owned a smoker to try this out.
Glad you enjoyed it!
Great video man! Thinking of doing it to my bike.I was just wondering weather Id have to change the computer flash in the future id I decide to go for a different head, or is the flashing a one time thing only
was wondering the same thing
There was nothing wrong with my 2021 ktm 300 I wanted the tsp kit for the extra oil ratio etc, and man did it make a massive difference was very surprised and happy with it
what compression head did you go with? what elevation are you? thanks
@@mschumaker1 i went with the mid comp, but I ride at very low altitude, I should have gone low comp for the bottom end Power
@@1276Tim but you're still happy with it?
@@mschumaker1 yes 100% happy, tsp all the way, Dave has done very well with his products and customer service, can't recommend tsp enough 🤘🤘
@@1276Tim glad to hear. I just picked up a new/leftover 22-300XC and planning on this upgrade over the winter
Rich - Love the videos! Question - I did the throttle screw mod and it made a big difference on my KTM300XC 2020. On this mod you did - is there a set position they recommend on power valve, etc or do you have to do a trial and error on that - or is it consistent where that is at along with this mod? Meaning - very easy to set it up and get a great feel? My buddy has the RK Head and his bike felt smooth - he does not have an ECU flash. He has the high compression one. Leaning towards the low compression but may have to wait for your other tests! We are single track/Enduro riders in TX.
TSP do have a recommend power valve setting by measuring. Also a starting point for idle needle and air screw. The powervalve setting seemed right but the idle setting was to low maybe half a turn more and I had to open air screw one extra turn. Bike rips now and my bike a 250 with high compression head
Rich. How did you feel about riding the low comp here in Utah at our elevation? Think the bike still had the lug and power or do you think it was too low and should maybe go with a medium?
More riding clips!
My TPI is vast improved by the TSP kit, can't recommend it highly enough
As a 🇬🇧 resident, we get treated like leppers when it comes to riding off road, with very little facilities available to us. How does it work stateside? You seem to be able to go anywhere 🤔
Hey! I'm hesitant between the low and med compression head. Have you tried the med yet? I was told that the tractability is rather a direct relation with the remapping than the head.
my high comp head on 17 te250 allowed me to run a gear high at lower rpms. I thought it was an improvement. Now I wonder...? I was afraid it would be stall happy but it's not, hmmm...
Have you done the medium and high comp head yet???
Hmmm great content! Waiting for more information :)
More to come!
I assume the bike would put out more emissions with the flash of the ECU. (I'm not worried) would there be any long term changes to the durability. I know a guy who has a special head on an older carb bike and it takes a lot more work to start the bike.
Even with the tsp mapping Doesn't the Sherco have the best motor for technical riding bc theres so much torque off idle? Appreciate your perspective. Awesome content!
I wouldn't say the Sherco has more torque off idle. The area the bike is able to lug, tractor and hold traction is larger than the stock TPI's. Lots of times these types of comparisons are apples to oranges. Is the Sherco better than the TSP? NO. Is the TSP better than the Sherco? Also No. I like the TPI machines better in certain places, I like the Sherco better in certain places.
@@IRCTireUSAMoto Thanks for the reply Rich! Glad to hear the sherco has no More off idle... I own a ktm tpi, I miss the off idle power of my previous ktm carby although the tpi model has many other improvements in particular the geo/suspension. I've been wondering about the tsp option for awhile, after hearing your thoughts I pulled the trigger...Thanks!
@@greatsouthernsky You will love it low and mid have huge improvements.
Long term review?
would not just adjusting your power valve with the green spring do the same?
Which IRC tire would you recommend for Intermediate/hard terrain? I live in Yuma, AZ and we have soft sand, some rocky area's, gravel, etc. Thanks for the info!!
The regular compound ve33 should work great.
This vid rides me further away from desiring a TPI. I’ll stick to my “15” 300 w/ Lectron for at least another year. I’m only at 600 hrs, I question if a TPI could meet that milestone. Completed a recent top/bottom rebuild at 550 hrs.
The 17 and newer 2 strokes made huge improvements over your 15.
@@chrispederson4157 You indeed are correct I’m riding with all the time, but most of them can’t come close to chasing me down. I’m not ready to upgrade yet, that’s all 👍
I agree and believe that it always the rider that makes the biggest difference. Sounds like you ride a lot.
@@chrispederson4157 thanks Chris I appreciate that! Typically about 100-150hrs of ride time a year. We do some long rides up to 100 miles on New England. Lots of single track with fun elevation changes. Lots of Ripping single track trails. Bark busters are absolutely necessary.
I've ridden a few TPI's ( including the GG EC300). None have wanted me to get rid of my well set up 17 250xc with lectron ( I'm in Colorado and love the lectron).
I think the Goldilocks bike would be the 19 250/300 xc which has the latest frame which I like but still carb'ed and am always looking out for one. If the SX had e start off go with that before a tpi if I was staying orange.
If possible, test Coober ecu (map) with stock head or low comp tsp.
Noted!
*Rides a stock 4t*
"Hmm low compression head, tpi, yes interesting, very science"
Ahahaha, that's me... Just bought my first 4t 2 weeks ago, but I love this channel 🤙
i see spooge, did this kit reduce, increase or unchange the spooge factor?
The head probably has a better, tighter squish band.
What is the cranking psi of the low head vs the stock. Also what did the squish test out to be. I've found that squish settings and angle is far more important than gaining or loosing 10-15 psi of compression
Stock my 20 250 was 175-180 psi with TSP high compression head 195-200 psi. Seems to run good so far 91 octane.
Do you recommend the clutch wheith in the same engine Husky 300i 2020?
why a "low Compression" head? thought the point was to boost the power?
Good video
Still is Aussie company dope , you can simply get awesome stuff in other countries
Is the low compression TSP head higher compression than stock?
No it is not. I've heard close to the same or slightly lower.
So why the EC over the EX? I am torn between the two.
I just happened to have watched another video where mentioned this, he prefers the wide ratio gearbox.
th-cam.com/video/pAvbZybtuWI/w-d-xo.html
@@NCER999 I ended up getting the EC 300. Loving it so far. I wish the first gear was a little longer but...
So how much dors this all cost????
$600 American/$800 Canadian
I still like the white KTM's best
They are awesome!
👍👍
still i prefer carbureted one.
Have you tried a TSP TPI bike yet?
@@chrispederson4157I have and they still suck! 😂
@@nevadahardenduro Hmm
@@chrispederson4157I have both 21’ and 20’ TPI. Both are XCW’s. I’ve sunk thousands into both bikes to get them to run correctly. Not mentioning the amount of time as well. TSP reflash with medium head on the 21’. TSP injector relocator on the 20’ with Hinson reeds, medium head and both bikes I’ve done up the air screw mod. Neither of them feel as good as my carb bikes. They both stall easier and flame out like 4 strokes when ya don’t want them to the most. They lug decently but not as good as a carb. And the 21’ was a mess when I did the top end. I can send you photos. The bottom end looked like it was overheated and scalded with spider web type look with multiple spots that had burs similar to a grinder strike. I got no dog in the fight man. Just a B class dude trying to get the most advantages I can by having a good running machine. I’m ready to sell both to be honest….ones east coast ones west. I reach for my carb bikes 97% of the time. They feel lighter and more like a damn 2 stroke. Wish I liked the injected bikes more trust me 😂