KTM Timing Chain Tensioner

Replaces KTM  part# 77036003000 and 77036003100. 

For the RC4, XC4, RF4 2008-2010 motors. (250, 400, 450, 505, 530, all models)

Also fits 2009-2010 Husaberg 390,450, and 570. Husaberg installation requires special instruction. (tensioner must be installed collapsed. This requires laying your bike on its side to install)

• If you have a "ticking" noise at idle, on your newer four-stroke, you need this part. (Listen to the video links below .) With OEM part. With Dirt Tricks part.

• Resolves issues with a slack timing chain on the new 4-stroke motors.

• Uses oil pressure combined with a mechanical ratchet system to prevent collapse.

• KTM 350 SX/XC is now developed. New part # TC-2 for 350 motors. See below to order.

The 2008 and newer four-stroke KTMs (and some earlier SX models) use a timing chain tensioning device intended to develop its force using the engine oil pressure hydraulically. The OEM components have serious flaws (reviewed below), which can leave the timing chain in a slack condition. This can have disastrous consequences.  Dirt Tricks has developed a simple, effective and failsafe replacement. The new tensioner correctly captures the oil pressure. Additionally, it uses a positive mechanical ratcheting system which prevents it from collapsing. The replacement unit will work on all newer four-strokes in 250, 400, 450, 505, 530 models using the RC4, XC4, or RF4 motor (not for the RFS motors). This means the following bikes:

• 2005-2010 all 250 four-stroke models.

• 2007-2010  450 SX-F and 450 SXS-F models.

• 2008-2010 all 400, 450, 505, 530 four-stroke models.

• 2009-2010 Husaberg 390,450 and 570.

• * Does not fit KTM 690 

With very satisfying test results from our race bikes, we have completed CNC production of the new tensioner. They can be installed in less than five minutes.  The price is $89.00 Please call if you have questions or comments. 775-267-6361.   NOW AVAILABLE! Order by clicking here:     $89.00

Note: We have created a revised part for the KTM 350's. PT# TC-2.   $89.00

Satisfaction guaranteed. 

Customers in Australia or New Zealand please contact Dirt Bike Pty. Ltd for immediate service: www.dirtbike.com.au

Customers in Sweden please contact EMX Racing for immediate service: www.emx.se

Customers in France please contact WEREurope for immediate service: www.wereurope.com

Dirt Tricks' Instructional video to install Timing Chain Tensioner in  KTM bike.

Video of engine with stock unit.    

 Video with Dirt Tricks unit.

To order:

PT#  KTM-TCT     $89.00

PT# TC-2          $89.00

Installation Instructions

As the spring is inserted and you compress it, you can feel and hear the clicks as the piston ratchets into position. There are a total of 10 ratchet positions at 1mm spacing. If you extend to more than 9 clicks, you probably need to replace your timing chain.