Hi all XT 's! I own a Xt 660 R 06' , i have it for about 9 months and i had to change the head light globe for the 4th time tonight! And i can't seem to find the solution to my problem! the globe is a Osram 12V 60/55W H4 U. Is the watts to high? Should it be a H2? this is unusual to me! Any info? plz guys! going on a trip saturday for 8 days long! yippeeeeeeeee!

The light bulb you use is the correct one, these bikes use the H4 if it keeps on blowing is not the bulbs fault but there must be something in the loom that is causing a short somewhere along the line.

You need to remove the tank and follow the loom to check it for corrosion or shortage.

Are you touching the bulbs glass when you fitted the bulbs?

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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 /
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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

No i didn't touch the bulb. the bulb lasts up to 3 months, then it just stops, and first the brights fail and only dims work and then not long the dims also fail.

Hi there Ottosdal.
Have a look at this thread.
It is in ASK KEV second page, Denny wrote in about light bulbs too
http://www.xt660.com/showpost.php?p=80992&postcount=1