New chain and sprockets....

[Farky]

Hi all, i'm wanting to down gear my 04 CBR600RR to give it a bit more acceleration, i'm not bothered bout it losing a few mph at the top. I've been told that a standard rear sprocket with a 15tooth front (16tooth standard) wil give me that extra bit acceleration, even wheelying off the throttle in 2nd. A 520 chain was also recommended. Also i've heard theres a 'Yellow box' to adjust the speedo to normal after down gearing? Any help or advice would be great!!!

Ian

[MickyP]

I went down one tooth on my 600 Yamaha and it was much improved: better in town, could leave it in a higher gear when overtaking, etc, and it wasn't a big enough 'drop' to necessitate shortening the chain. I doubt whether you'll be wheelying in second, but we live in hope...

Can't advise on your speedo, mine's driven off the front wheel.

[Biker's Nemesis]

I've gone One less on the front and Two extra on the rear, of my 03 600RR.

It'll still do 140 ish.

There's a gizmo called "Speedo healer", alter the gearing and you'll not get a true reading.

Edited by Biker's Nemesis on Tuesday 4th December 21:37

[Farky]

Sorry, i meant to say 15front and 45 rear(standard 43)!!

[tim2100]

I got a Speedo Healer on my bike, works pretty well.

Recommend.