Yamaha TRX850 Enthusiasts Forum

Is this asking for trouble, or can a 520 cope ok with the TRX's torque? Has anyone done it?

Easily Kayla, might not last quite as long as 525 but it`ll be fine as long as you use good quality HD chain.
I`ll be up at Knockhill this weekend with the Classic Racing Club and lots of those guys race with it.

Thanks

I have around 100 BHP, and can't say that 520 wears a lot faster. Other factors are probably affecting more, i.e. lubricant, weather, chain/sprocket quality. R6 has the same splines as TRX output shaft, and there are plenty of 520 conversion kits for them. I have a custom-made rear sprocket now, since i have different rims, but if i remember right, JT has rear alu sprockets in 520 that fits the TRX hub.

You still on the `losing weight` diet Kayla?
For the TRX that is.

Mincehead wrote:You still on the `losing weight` diet Kayla?
For the TRX that is.

Yep!

I've done the opposite.. done a 530 conversion. Theoretically this involves additional power losses & increases in unsprung weight, in practice neither are apparent. What I do notice is a huge increase in chain & sprocket life. Remember the TRX may put out less horsepower than a R6 but it thumps out a lot more torque & thats what munches chains... (plus crap weather if you live in the old dart.)

DFH

& is it just me, or are 525 chains more expensive than 520 or 530 chains????

M.V. wrote:& is it just me, or are 525 chains more expensive than 520 or 530 chains????

No it's not just you, they are more expensive

dfh wrote:I've done the opposite.. done a 530 conversion. Theoretically this involves additional power losses & increases in unsprung weight, in practice neither are apparent. What I do notice is a huge increase in chain & sprocket life. Remember the TRX may put out less horsepower than a R6 but it thumps out a lot more torque & thats what munches chains... (plus crap weather if you live in the old dart.)

DFH

I'm not really expecting to see any change in performance, but all those 50g bites add up in the end I'm lucky in that I don't have a commute any more so my bike is purely for fun