Hawk gearing
 

ok, somewhere on this board someone proposed taking 4 links out of the chain if going to a 45 tooth rear sprocket from the stock 50. i advise don't do it until you have your gears on and test the chain link yourself before removing any links. put a 16 front and 45 rear on my hawk today. needed to remove 2 links.

at indicated 55 in 5th, the bike now accelerates strongly on up my local steep road up the hill out of the valley, a long big grade hill where almost all cars/trucks downshift. :} not yet fully broken in, so don't have a flat out number for u yet, but i can tell u it will be impressive. this engine is strong and could easily pull a 17/45 combo, but the 16/45 seems sweet for the hilly terrain round here where u sometimes need a top of about 65-70 sustained to keep from getting run over,but yet the bike seems to have maintained its trail low speed grunt. hats off to Ricky Power Sports on bringing in such a capable machine!

I'm running 17/45 and haven't removed any links. I agree the engine is a torquey little bugger and pulls well . I love bike that you can short shift and the Hawk fis this role perfectly. Drop it into 5th about 30 and never shift for most road rides. I live in the Blue Ridge Mts so lots of ups and downs as well .

I would love an extra gear so i could make 1st slower for mountain trails. I don't do much road riding as i have millions of acres of public land out my back door. Some of the trails are pretty rocky and steep though and on the really steep stuff i either try to get the tire spinning (HANG ON TIGHT!) or walk it and feather the clutch.......

Hawk gearing
 

wolf, i,m in the ozarks :)
mjstep- i am at about 1k elevation, presume u r in the clouds. i think u can find a 14 or maybe even a 13 front counter shaft sprocket which should get your first gear down near honda trail 90 type speeds:) you must be riding some gnarly chit! :}

can any put the part # up for the 17 and 45tooth gears. or what bike to look for that fits

I just ordered some. I bought them on Amazon. I was told to search JTF259.17 for front and I got a 43 tooth for the rear JTR269.43

17/43? what is your top speed with that combo?

Just ordered them so haven't put them on yet. Also going to be changing the tires from stock to more street tires

ah, smaller od tire so need taller gearing

while on this topic I toss some of the sprocket sizes I've seen into an excel spread sheet.

Front- Rear- Ratio

15 --- 45 --- 3.00
13 --- 39 --- 3.00
15 --- 43 --- 2.87
16 --- 45 --- 2.81
14 --- 39 --- 2.79
16 --- 43 --- 2.69
17 --- 45 --- 2.65
15 --- 39 --- 2.60
17 --- 43 --- 2.53
16 --- 39 --- 2.44
17 --- 39 --- 2.29

I was thinking of going to a 44 rear with a 17 which would put it 2.59, just wondering if the bike would handle it.

4 things to consider in answering that question: your topography, your altitude, your riding weight and your carburetor. my guess is yes. i am 250 or so, live in the hills, avg elevation here -around a thou, stock carb setup. I run a 16x45 on full knobbies and can pretty much go anywhere from gnarly trails to 65 + blasts down the local 4 lane. GO HAWK!!

I'll be VERY curious to see if my coming tt250 can match up.

Well I decided not to chance it and just got on eBay and ordered the 1745 Combo. I hope it makes a difference decause with the stock gearing the RPMs are really screaming

17/43 combo
 

Any clearance problem with the 43t on the rear swing arm? Anyone running this combination yet?

just put the 17 on front and will put the 45 on later.
BUT, something which is a little concerning is there is a little bit of play in the front sprocket now , like the original was a little bit thicker than the aftermarket one. should this be a concern?

I dont think so, I think the way its designed is that the chain "auto centers" the sprocket. So as you ride the sprocket kind of automatically finds its center.

Mine was the same way.

I could be wrong though, hopefully its all good! :)

we have changed two hawks. neither had any play in front countershaft sprockets, either before or after...sure they sold you the right sprocket?

Mine have the same play too, I was concerned at first but it's been good no problems.

I had read someplace that the original sprocket is 20mm wide and the jt sprocket is 18mm wide. There is some side to side play but watching some vids about sprocket replacing on honda 250's this seems to be pretty standard.. Just checking with you all.

I recently changed the sprocket on my Kawasaki KLR650 to a 17t that normally went on the KLX600 (I think)... but during my research I found dozens of people reporting 'Leaks from the Shaft' showing up after several thousand miles of use (3 or 4k), and it was only on the motorcycle that DID NOT 'measure and shim' the sprocket(s).

Come to find out the 17t sprocket is 3mm or so smaller (width), those who put a few shims on with the sprocket had NO leaks from the same area, one guy reported having over 40k miles with a shimmed 17t and no leaks.

Good news, if you get a leak from that shaft, the gasket/o-ring is cheap to replace (even on a Kawasaki)

Thanks

Hey y'all I'm new here. I just bought a rps hawk enduro from killer motor sports I read on here about sprocket changes so I figured hell I'll go will a 35 tooth gained 5 to 8 mph took my tip off the exhaust and gained 4mph changed my spark plug to a NGK and gained 4mph when I got the bike it was rapped out at 45mph after my changes it goes 62mph on the flat guna change the carb and air filter. See if I can get up to 75mph

Welcome; we are glad you joined us. :hi:

So why is the part # for the rear sprocket JTR269 and the front JTF259? I did find a JTF269...which is the right front sprocket?

JTF259 (the F is for front) is the correct countershaft sprocket, assuming you wish to retain the 428 chain pitch. I would.

JTR269 (the R is for rear) is the correct rear sprocket, assuming the bike has the standard Honda XL185 bolt pattern 428 sprocket.

There is no such sprocket as JTF269, according to http://www.jtsprockets.com/

Ok, thanks Weld. I thought I found a 269 front on Google but you just confirmed I ordered the right one.

Happy to help.

anyone tried a 17/47 combo?


the TT comes with 17/50 stock and I've only really seen people with either 17/50 or 17/45 combinations.


its only 20$ so might have to try it.

I leave the garage at 3300 and can be 4700 with a whole lot of room to climb in 10 minutes.