Hi, I'm new to the forum but have been riding bikes since 1978 (yes, I'm that old!)
Having had my XTR for the last few years and absolutely loving it, I'm planning to do some long distance trialling. I'm starting with the Lands End event at Easter.
Anyone else tried this on an XT660? Am I mad....???
A few mods will be necessary and I'm planning to use a bigger back sprocket (or smaller front?) to get the gearing more practical for the rough stuff.
Any one out there got any advice?

hi and welcome to the forum

Not done any big events when I had my old xtr but I did quiet a few days out and they can some amount of off roading. Ok they are not a moto x bike but good tyres, sump guard, off road pegs, crash bars and a full tank of fuel and your off

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Plough on

Thanks!
I'll let you know how I get on (or off!!)

and to

Hello mate, anybody correct me if I'm wrong but if you put a smaller front sprocket on the front to lower the gearing it messes up the the speedo to read faster than you are actually traveling so you would also need a speedo healer to correct it.
But if you enlarge the rear by 2 or 3 teeth which works out similar the 1 down on the front, you may have to extend the chain, unless you are putting on whole new set of chain & sprocket's then not so much of a problem.
I would favour making the rear sprocket bigger as the no healer needed, & also keeps the chain a good distance from the chain guides on the swing arm thus reducing wear there at bit.
Hope that was of some help and good luck on the Trials.

Welcome on board mate.

Don't see any reason why the XTR should make a decent long distance trail bike. So no, your not mad!

Bigger rear, or smaller front - same difference. They will both lower the gearing and will both affect the speedo reading in the same way. It is the net overall final drive ratio that is the influencing factor.

Down side of smaller front is increased (front) sprocket wear and as you mention, the chain is closer to the swingarm, which is vulnerable to wear when rear suspension is loaded. Upside is it's cheap to do.

Going for a bigger rear is indeed the more complete solution, but is more costly to do.

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Incorrect............
If you change the final drive ratio in anyway the speedo will be out...

I do multi day back country rides on my XTR with no probs...

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Harley Davidson..
The easyest way to turn gasoline into noise with out the side efect of horse power...

Hi & Welcome,

I have a XT660R also and am keen to use it off road... nothing too radical though.

Love to hear what mods you make!! Good Luck.

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Cheers Mate,



XT660R

Welcome mate.

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

Thanks for all the input. Sounds like a bigger back sprocket is the sensible way forward.
More practice definitely needed!