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Best $46 or 367$ mod...45T rear sprocket!

85K views 347 replies 79 participants last post by  miguel 
#1 ·
Installed the 45T sprocket today.....best mod for the $($46 from Sprocket center). I was going to do a full 520 conversion, but couldn't justify $220 when my chain was in perfectly good condition. $46, however, was a no brainer. Didn't have to break the chain or remove the wheel. She now pulls like a beast...especially in lower gears. It's a must do!

Will
 
#7 ·
Yes the 45T is a great mod , you will not see a significant loss of mpg . I do 70% highway 30% city , no problems . I probably lost 10-20 kms a tank. But that is mostly due to the "need" to wack the throttle open at every opportunity and pass / accelerate like a boss all the time.
Combined with the quick throttle mod .... whoopee!!

The speedo correction can not be done with a code scanner . You will need to download the freeware TuneECU and get a 20$ ( or less) ebay vag-Com cable to make your speedo corrections .
 
#9 ·
On my 2006 I put the bike on the stand ( my stand is reverseable so I can pick up from the tire side or the chain side ) adjusted the chain slack to the max. Then I unbolted the factory sprocket .
I puled the old sprocket off, put the new sprocket into the slack chain and lined up the bolts , torque to spec and adjust the chain tension. torque the pinch bolt and test ride .
If you have all the tools at hand its a 15 min job.
 
#11 ·
When you open Tune ECU , load the map that you bike is running , on the left hand side about half way down the page there is a "Speedo adjust %" If you have gone up in teeth you have to go down with the correction. So after you make your speedo correction you have to save the map with the new speed value . I name mine with the adjustmens I have made , eg: " Norm_3_20101Maprevedit45tspeedoadj.hex"
Now hook up to your bike and select your new map for upload . easy .

I have the stock front and 45T rear , I have uploaded a (Negitive) -7.5% speedo correction. Seems good .
 
#20 ·
I got the Vortex f5 PTFE T6 sprocket, looks really nice and quality is top notch. I think it's the trickest looking rear sprocket out there.

http://www.kneedraggers.com/product...Hardcoat-Rear-Sprocket-520-Pitch-Suzuki-SV650


Lighter than my mates Supersprox and has been holding up really well. I got a 44 tooth rear when I did a 520 conversion. The pick up has been noticebly better but not as manic as what most of you guys with the 45 tooth have been suggesting.

Overall I'm pretty happy with it.

I have a steel 45 tooth at home as well and may put it on over the holidays to see if the difference is that noticable.
 
#24 ·
Very tempted by all this talks of 45T sprocket. Is it possible to change the rear sprocket without a "reversible" rear stand (i.e. bike on side stand)?

What's a recommended 45T sprocket? And what's a 520 conversion?
520 is the chain pitch , or distance between the teeth.
Stock is 530 heavier , bigger . 520 conversion are for the weight watchers .
Yes you can do a rear sprocket change with out a stand , it just takes a little more farting around . Put the bike on the stand, get max slack in the chain, remove the sprocket bolts , take the bike off the stand remove the sprocket and set the new one in place , put the stand back on and bolt and torque the sprocket into place . Set the chain tension and you are good to go .

I have and recommend Supersprox
 
#23 ·
Don't forget that if you change your error % on the speedo it will affect the mileage on the speedo.
Forgot who posted that before but it's on another thread somewhere. So in turn your mpg may not be true....
 
#26 ·
At 25k I would drop the $ on the whole kit and get the " lifetime guarantee" , yeah 360 bucks is a lot , but you will never have to worry about it again. That is if you plan on keeping the bike for " lifetime" .
If you are confident that your chain measures out OK , and has not stretched too much , and your front sprocket looks like new then go for just the rear.
Many will advise against doing just the rear at 25,000 , but you will know right away if the chain does not sit right , or sound feels funny under accell.

I have the sprocket pictured in the link gold in the center. I changed mine out at 10,000 , no problems the chain was still in like new spec.
 
#38 · (Edited)
I assume this means that a 45 is also acceptable on a 2000 S3 with a stock chain? I'd love some additional low-end power and this seems like the way to go.

QUESTION: people are running the stock front sprocket with this setup? Or are people also using a different front as well?

EDIT: Have people used this rear unit on the S3?

http://www.sprocketcenter.com/p/1180399/drive-sytems-530-black-steel-rear-sprocket---triumph.html

If so, how did it hold up over time? I like the all-black steel design.

Thanks!

- Matt
 
#33 ·
This website is responsible for a lot of spent money over my winter season.
I choose not to use the "blame" word like the wife does .
But her tune will change when she gets her Street Triple :)

What do you guys think about doing a 44t rear???
I cant say that I have seen a 44t sprocket. But if you are going to do it , do it 45T make a change or do not . Your milage only suffers because you are having too much fun with the new found jump:) Top speed is down from 230kph to 220kph , This should not be a dealbreaker .

Grip it and rip it .
Kick the tyres and light the fires . ...
I cant think of any more .
 
#37 ·
#40 ·
After reading this thread weeks back, i was inspired to give the 45t sprocket a try. I got the same $46 sprocket from sprocket center. We finally got a little sun and the roads were dry enough to go for a quick 10 mile test drive. It's only about 40 degrees so the roads were too cold to really turn up the wick.

Based on this limited test ride I can safely say that I extremely pleased with the results. The bike really pulls hard now and will easily power wheelie in 2nd with no effort (not that i'd ever endorse such hooligan antics :D ). I'm a bigger fella as well so the extra oomph is a welcome addition.

Super easy install as well. Really can't go wrong with this mod.

Cheers!

Morgan
 
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