Dirt Tricks KTM 350 , 250 Tensioner

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Automatic KTM Timing Chain Tensioner for 350 SX/XC engines.


Automatic KTM Timing Chain Tensioner for the KTM 250 / 350 SX/XC models.

- If you have a "ticking" noise at idle, on your newer four-stroke, you need this part.  Resolves issues with a slack timing chain on the new four-stroke motors.

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


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.  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.

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 11 ratchet positions at 1mm spacing.  If you extend to more than 9 clicks, you probably need to replace your timing chain.



All 350 4-stroke models


11-17 SX-F 250


14-17 XC-F/XCF-W 250




14-17 FC/FE 250


14-17 FE 350


15-17 FC 35-, FE 350S


Below is an overview of the OEM design verses the Dirt Tricks design.





Brand Dirt Tricks
Shipping Weight 0.2000kg
Shipping Width 0.100m
Shipping Height 0.050m
Shipping Length 0.100m


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