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

84K 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
 
#232 ·
I ordered my rear from supersprox Black, 45T, and it came in 5 days from the day I ordered it. It fit very easily, and it fit around my rear 190 tire. No issues in installation at all.

I put it in about 15 minutes, and it fits the stock chain very well (I didn't change the chain or front sprocket, the bike has about 2k miles on the chain and front). Adjustment was a snap.

I noticed a difference in acceleration, but it isn't the total wheelie monster that i expected (not that wheelies are hard in any way). Perhaps that's the wider rear tire, I'm not sure. I can easily control the bike's response (I have the stock throttle, no mods) - so any worries about it being 'uncontrollable' are, in my opinion, just the result of someone who needs to learn a bit more control with their right wrist. One or two track days will solve the issue without a problem at all. I have not done any wheelies that I wasn't intending to.

I can loft the front wheel easily in 1st and 2nd (no clutch), and 3rd is a gentle climb to about 6" off the pavement from about 5k-9k RPM when I go WFO. I wouldn't call 3rd a 'power-wheelie' like 1st and 2nd are.

And just FYI, I pull just under 5k RPM at 75 mph on the highway; that's a bit more than i like, but I don't drive the highway much so it's acceptable.

I'll probably even convert to the 18/45 520 set-up when I do the chain and front sprocket in a few thousand miles.
 
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#237 ·
http://www.sprocketcenter.com/p/1180399/-530-steel-rear-sprocket---triumph-.html

I believe this is the vendor that the guy who started this thread ordered from.

They are out of stock now, and when I spoke with the guy a while back he said it was going to be like 6 weeks or something so it should be soon. I didn't feel like waiting so I ordered the supersprox. It wasn't 120 though it was probably more around 80. Give a call and see whats up though maybe due in sooner.
 
#238 ·
Here is the response from Supersprox regarding the Stealth sprocket. I'm not sure what the price will be, but I've heard good things about the Stealth...

Thank you for the request on our website.
Unfortunately we are out of stock with 45T rear sprocket for your bike.
This item is in production and should be ready for dispatch from our factory by the end of July.
Please let me know if you can wait for the shipment to come in and I will contact you as soon as the sprocket is here.
If you cant wait then the other option is to order a custom sprocket which is RSB1522:45 Black for $119.95
Feel free to contact me if you have any more questions.
All the best
Aneta


Sent from my iPhone using MO Free
 
#239 ·
Just got mine...I have a wonderful slightly descending right hand curve with great sight lines that I try to hit every time I ride. I have been trying to get to 60 mph on the out but always only get to 56mph. After installing the 45t, I hit 61 mph. Whoo hoo,,, but then I remembered the speedo changed:Angry..Oh well I love the blue.
 

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#241 ·
Yeah thanks for that. i have a 520 chain and front sprocket on the way but have been finding it really hard to get hold of a 45 tooth rear aluminium rear for an 08 speedie... pain in the a$$!!! especially considering im in the land of Aus... anyways, im working on it.... might just have to bight the bullet and get a custom made one from supersprox... 170 bones for a rear sprocket seams very unnecessary though!!!
 
#242 · (Edited)
Little late to the party, but here to stay ;)
Needed a new chain and decided to go for 18/45 and a 108 links chain. Great decision! I can't stop smiling. It's not like the S3 didn't pull like a freight train before, but now it's a whole other ballpark - unbelievable. Especially with TORS fitted and its early torque mountain, the thing pulls like a space shuttle.
Only problem: When twisting the throttle "manly" in 1st and 2nd, it's either wheelie or spinning the rear tire (especially from low speeds and out of corners), depending on where I shift my weight. Good thing I have clip-ons installed, they really help me to keep the front wheel down, while at the same time putting enough weight on the rear tire.
I'm also glad I went with the 108 chain which the mech suggested. I prefer a slack chain, since I often ride with a passenger (girlfriend), and the 106 would strain the drivetrain too much. The 108 links chain OTOH allows proper slack.

There's a 100kph (62mph) limit on highways and a 130kph (81mph) limit on motorways where I live (plus you're safe to exceed those by about 20kph, or 10-15mph), plus the roads are really twisty, so I don't really miss the top speed, never went above 130mph anyway.
 
#245 ·
A few reasons I guess:

Easier to do the rear at home for most people.
Doing the front smaller increases wear slightly on the chain.
-1 front is actually making the bike slightly shorter geared than +2 rear.
Depending on chain length, you can sometimes only do one end without having to cut and take a link out of the chain.
 
#244 ·
You could, its not exactly the same but its close. Some have said it causes the chain to rub in the front due to the smaller size, though I am unsure how many people and if the claims have been substantiated. The rear also seems a bit more accessible and took me all of 15 minutes start to finish so it may be an ease of the swap as well. Just my $0.02
 
#248 ·
No need to pull the wheel, just loosen the chain enough to be able to get the sprocket on and off and rotate the rear wheel as needed to get at the bolts (you need an allen wrench and a socket). Pull the old sprocket off, new one on, tighten bolts and adjust chain to proper tension. Then you are all set! I did the whole thing with the whole bike still on the side stand.
 
#252 ·
It is the same sprocket for 2005-2012 (probably 13 too but sites haven't been updated), I got mine from Supersprox. It was a bit pricey (mine was 85, now it looks like 120 which is a bit much), but sprocketcenter.com was all out and it was going to be months before they had more in.

You may be able to find an aluminum one, I just wanted the steel teeth still and this one has an aluminum carrier for a bit of weight savings.
 
#271 ·
I have a 45t rear sprocket ready to go on my bike but i have attempted to fit it before and i found that i need a longer chain (pulls the wheel forward far enough to touch the hugger).

My question is how many more links do i need if i buy another chain?

Is it a case of 1 extra tooth=1 extra link or is it more complicated than that?

I have tried a quick search on here but i can't seem to find any answers.
 
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