Difference between a 2004 to 2006 & 2007 XT660X

Looks 2007
New tank side covers
New fuel tank mounts points for side covers
New radiator grill
New rear foot pegs
New rear grab handNes
New head light & cowling
New Swinging arm
New Swinging arm chain guide
New exhaust heat shields
New radiator hose clamps
New chain adjusters
New frame protectors by your feet.

Running gear

2007 XTX
Length 2,175mm
Width 865mm
Height 1,170mm
Seat Height 875mm
Weight 177 KGS fully fuelled & oil 186KGS

2004 XTX
Length 2.150mm
Width 860mm
Height 1,210
Seat Height 870mm
Weight 173KGS

Rear wheel travel has been reduced for the 2007 XTX from 200mm to 191mm

There is now a 2nd speed rating for the XTX to include 58H & 58W speed rated tyres

We will be seeing different tyre brands on our new bikes from Yamaha, Michelin/Radial Pilot Sport, Metzerler/Sportec M1 & current Pirelli Dragon.

XTR running gear, remains the same spec as 2004.

Motor applies to both XTX & XTR

2007 XTX has a different Engine ECU part number ending with 10. Remapped fuel injection using lambda control.

2007 model has done away with the twin spark feature & now has single spark function.
2007 XTX ignition timing has been reduced from 9 deg at 1500RPM to 5 deg

2007 Min idle speed has been raised from 1300min to 1400 RPM

2007 Torque is up from 58.4Nm to 60 Nm at 5250RPM

2007 now has a O2/ lambda sensor

Fault code 24 will be displayed on dash if O2 sensor is unplugged.
Diag code 31 will display if the fuel mixture is to lean.
Diag code 32 will display if the fuel mixture is to rich

No real time display mode in Diag screen for the O2 sensor
Lambda probe has 4 wires, 2 wires for lambda heater 12 volts input, wattage to be determined & a 2 wire lambda control 5 volts input, output voltage & amps still to be determined. Fuel mod pending info.

There are new min wear spec's for the oil pump on the 2007, it may have a new pump or they have revised the min clearances. I will be able to tell once I get the parts manual.

There is also a new ID mark for the throttle body on the 2007 5VK8-10 & 2004 5VK1-00. Can't see what has changed on the throttle body.

Revised torque settings for all engine mounting bolts on the 2007.

Wiring is the same on both bikes except for the addition of the O2 sensor wiring on the 2007 model.



I'm sure there are more improved items on the 2007 model, I will add them as I find them.

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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

yamaha says Rear wheel travel has been raised for the 2007 XTX from 191mm to 200mm ?!?!?!?

You will find that is a typing error on their website, like when they said the bike has a wet sump and instead is a dry sump. It happens. The manual that me and Kev have provides the correct informations.

Could You please explain a bit more those diag codes 31 & 32 ?
I have a 2007 R and don't have those codes (I havent changed nothing on my bike yet either).

A 2007 XTX/R with lambda probe will have these diagnostic codes 31 & 32.

If the fuel mixture is out of the range of the lambda probe, meaning it is unable to adjust the fuel mixture back to it's preset value. A fault code will be displayed on the dash 31 or 32. You will then know in what direction to diagnose the fault.

__________________
Click here to join the XT Supporter's scheme

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

I don't know.
I have xt660r 2007 with lambda probe but no 31 and 32 diag codes ?!?
Unless those are error codes ?

Exactly what is heavier, and why(!)?
I thougt that was one of the main issues about this bike, reffering to reviews etc. Figured it would be more likely for Yamaha to try to put it on a diet if they where anyway going to update it.

Cheers // Jens