How To: Dirt Bike Front & Rear Sprocket change - More top speed for the Hawk 250 Enduro
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- เผยแพร่เมื่อ 16 มิ.ย. 2021
- The stock gearing on my Hawk 250 was a little bit low, great for trails and woods riding but I wanted to be able to do 50-55 mph to work without redlining so I swapped out for some higher gearing.
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JT 16t Front Sprocket - amzn.to/3vyOjD5
JT 45t Rear Sprocket - amzn.to/3q3Gbtc
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Always make sure to set your torque wrench back to the lowest torque setting before storing. The spring inside will develop a memory and throw off the accuracy.
Oh great tip! I never thought about that to be honest, thanks!
That's wild, i cant believe they gear the hawk so low. I got the bsr Raven, its stock is 17/46. Good video btw 😁👍 upgrading mine to 17/42 since I do primarily back road and gravel. Very excited to be able to run at 55 without all the vibration of pinning it at 6500rpm 😅
Thank you! Took the mystery out of the procedure and made it really easy to do.
Thanks for watching - Glad it helped!
The power of the grunt
Just did sprockets and o-ring chain on my brozz. Since I do more commuting than dirt I went with the 17/40 and love it. I can run 60 mph at 6100-6200 rpm now. First three gears will do me good on dirt roads and easy trails still. If I can find a little more top end power, 65 mph will be a do-able cruising speed on relatively mild terrain.
Nice! That's the great thing about changing sprockets, it's easy to customize the gearing for your riding style/needs.
I thought 17-42 was the best option ?
@@user-km5kj8xh1x I found 17-40 for more road oriented, 17-42 would be just a little higher rpm and probably a few mph less then that. I could probably drop to a 42 sprocket, but I am looking at finding a few more hp to make it work. It really is all up to how you use your own bike what is best for you.
keep the videos coming!!
Thanks! I've got more on the way soon
You made that look easy. I may have to try it on mine.
I'm not a mechanic but I play one on TV..... LOL
🗣Definitely do the bearings & seals video.🤞🏾 Appreciate you & what your doing btw👍🏾💪🏾
Thanks! It's an option, things have been working really well so it's not a top priority. But I do have a rear shock I want to do and I might do the swingarm bearings at the same time. Word on the the street is the stock ones have no grease in them.
i like the 16/45 best of both worlds nice torque and decent top end. 60 at 6500 rpms not bad. i like the fact 5th is really usable also
Ya I'm pretty happy with it, sometimes the bike wants a 6th gear but overall I have no complaints with this gearing.
I am using 15 & 45 on my enduro
@@skydcontrol I find it the same, the machine as for a 6th gear too
FYI: 35 ft-lbs with blue Loktite works great with the sprocket stud bolts.
Ya? Good to know, I did put some blue loctite and I'm pretty confident I got at least 35 lbs on it but I'll check them again soon.
@@skydcontrol sure thing. Also, the brake caliper bolts should be torqued to 22 ft-lbs. The rear axle nut should be torqued to 35 ft-lbs, not 65 ft-lbs like the Hawk manual says. I’ve seen a few swingarms collapsed with 65 ft-lbs. See the TT250 online manual here for torque specs: cscmotorcycles.com/tt250-rear-wheel-removal-and-re-installation/
Most Hawk guys use those.
@@dustinsegers4534 You know, 65 felt like alot. I'll check out the TT250 specs as they're probably more accurate. You know I have a Honda CG125 manual also, I wonder what that says. Thanks again!
@@skydcontrol the CG 125 manual is perfect for the engine, for the rest of your bike, not so much. The TT250 manual is perfect for the rest of it except for the rear sprocket and the front USD forks (of course).
What socket size are those
Need you to tell maker of sprockets and specs of millimeters so I could purchase parts for my hawk
The links to the products used is in the video description - The brand is JT Sprockets.
So, when changing out both sprockets, does the stock chain just fit right into place? I would have assumed (not know anything about anything) you needed a new chain that would line up and fit properly.
It depends on how much you change it. For example I came down a few teeth on the rear sprocket but went up 1 on the front. Then there's an adjustment that in my case took up the extra slack. In some cases you would need to take a few links out of the chain for sure.
I want to decrease my rpm's...I've seen some recommend 520 o-ring with 13 front and 40 back...any thoughts?
The 520 chain isn't necessary but you surely can upgrade to it if you like, it'll take a bit more of a beating. 13/40 will surely lower your RPM's but at the cost of low end torque. I don't think this is too far off my setup of using the 428 chain and 16/45. In fact I think my setup is a little higher geared. check out www.gearingcommander.com/
Is that an X pro Titan 250cc
Am looking for sprockets on mine , but just don’t know how or where lol
Mine's an RPS Hawk 250 but most of these are built on the same copycat honda CG platform so the sprockets should be the same.
Did you put grade 8 bolts or the ones it came with ? On the important components in general
I used the stock bolts, Grade 8 bolts have a high tensile strength but are also brittle and not really needed in this case. If I was going to replace the stock bolts I'd probably just use grade 5.
@@skydcontrol was just curious because I'm going to order one soon and didn't know which bolts needed to be replaced, maybe I'll get grade 5 like you mentioned
This setting doesn't use a snap ring ?
For the sprocket? Yes it does, you can see at 2:48 where I take it off
Yeah that whole side piece comes off you didn't have to take the two bolts out it just slides off
Ya I think I figured that out after the fact
What jack is that please?
It's just a simple lift stand, I think it has a 300lb capacity - you can get them on amazon - amzn.to/3CKWoZ9
What is the socket size for the engine sprocket bolts
I'm going entirely off memory here so I could be wrong but I believe they are either 10 or 12mm
@@skydcontrol yeah its a ten I ordered a 8
Lol! Newbie!
Keep the rear wheel on to get the sprocket off first.
My hawk I’m scared to make it faster. Death wobble is hard enough to control
I can cruise 65mph no issue with my gearing, never had death wobble. Make sure your rear tire is tracking straight it's easy to get one side tighter or looser and point the tire off to one side.
I will check that thank you
The rear sprocket is a pain to get off they tightened them so tight 😭
Early hawks apparently had some issues with them coming loose, so I think they hit it good with the red loctite as the fix for that.
Just remember that if you lose a tooth you also lose power And when you on a steep climb that is when you will notice it.
You don't lose power, you're changing the ratios and therefore how the power is transferred. It's a trade off though, if you need more top speed you're gonna lose the lower end crawl. This setup has worked well for me. I think it's a good compromise.
@@skydcontrol That is what I meant by losing power. You give up a little low end going down a tooth. I probably didn't use the right term. But thought it is important the people understand that if they are using the bike off road. a lot of people today don't even understand what you are doing and why changing gears do. For an example I have a Chinese 250, you buy what you can afford and used dirt bikes are $4500 minimum, it came with a 40 tooth rear sprocket and I put on it a 48 tooth to get more low end power. It's a dirt bike and not an enduro, so I don't need to go 70 on the dirt. 55 will be just fine.
@@donaldgrant9067 I agree, 55 is plenty for me as long as I'm not winding the engine out and it leaves me enough down low for low speed control off road. Also, makes wheelies easier too 😁
@@skydcontrol I have the Appallo 250 and the problem I had was getting up the motorcycle ramp into my 4 wheel drive pickup. Kept stalling out just about the time I got to the top. I dropped it twice and decided that I needed more low end power. So I went with the 48 tooth. I've got a Chinese 2 stroke coming and I'll let you know about that. Those of us that can't afford a KTM need a good bike to ride on the dirt. After all we the working class were the ones who started dirt bike riding. Oh how's your knuckle. That always hurt when you hit it.
@@donaldgrant9067 I learned shadetree mechanics requires bloody knuckles or you're not doing it right 😅. I may have to give one of those 2 strokes a try myself but right now I actually have my eyes on a beautiful Triumph Speed master so maybe some videos coming of that. Haven't pulled the trigger just yet
Rrrrr stop why did the engineers set the speed
when use hammer use side not head so not hurt u self
It's not a successful job if you don't hurt yourself - LOL