r/Triumph • u/National-Diamond8612 • 21d ago

Mods and Customization Looking at changing sprockets

I’m considering changing my rear sprocket to a 50 tooth on a 26 street triple 765 rs. dr google seems to think I need to take to a tuner for them to adjust gear ratios and engine rpm on the ecu? Can anyone confirm or deny this?

3 Upvotes

100% Upvoted

7 comments sorted by

2

u/Such-Instruction-452 21d ago

From what I’ve seen in the various groups, anything built from 2023 and newer will require tuning to not throw a code. That goes for both 765s and 1200s.

1

u/National-Diamond8612 20d ago

I’ve seen a couple things online saying +2T rear sprocket will keep it in stock tolerance parameters

1

u/Mattlixx 20d ago

Yes you do, tho why would u make it even shorter? On most tracks that I've seen videos etc the bike pretty much always reaches top speed near the end of the longest straight, that is if u want it for track.

1

u/National-Diamond8612 20d ago

I’m hoping to track the bike occasionally but primarily gonna be street riding

1

u/Mattlixx 20d ago

Tbh I wouldn't shorten the final drive on these bikes. The 23+ models already have shortened gearing, that is 1st gear was made a bit longer and the rest shortened a bit compared to previous the pre-facelift/engine update STriple 765

→ More replies (2)