Dirt Tricks Countershaft Dome Washer for KTM, Husqvarna, Husaberg, GasGas Beta
Our testing has determined that the O.E.M. dome washer is made of mildly heat treated material. When that component is installed under a tightened counter-shaft bolt, it is taken well beyond it’s “yield” or “elastic” limit and permanently deforms. In that condition in cannot maintain the thrust pressure necessary to keep the sprocket tight to the splined shaft. That leads to two different failures. First, as described above, the countershaft seal O-ring is allowed enough clearance that is begins seeping. Secondly, the backlash between the splined shaft and sprocket is allowed to more freely pound in each direction, as the torque of power verses compression reverses itself.
Dirt Tricks has developed a tool steel, heat-treated dome washer that develops two to three times the pre-load force without reaching it’s elastic limit and without over-stressing the mating components. This solves countershaft seal O-ring leakage as well as extending the life of both the counter-shaft and sprocket splines. A counter-shaft replacement alone, with labor costs in excess of $700.
If you plan to keep your bike for many seasons this product is well worth the investment.
- Stops countershaft seal o-rings leaks
- Eliminates premature countershaft and sprocket spline damage
- Keeps sprocket bolt tight
- CNC machined from heat-treated tool steel
- Made in the U.S.A.
’00-22 KTM 250, 350, 400, 450, 500, 520, 525, 530 4 strokes
’17-22 KTM 250/300 EXC/XCW/XC/SX/6D
’13-14 Husaberg 250, 350, 450, 501
’14-22 Husqvarna 250, 350, 450, 501
’17-22 Husqvarna TE/TX/TC 250/300
All Beta 4 stroke models up to 520
’21-22 GasGas EC250/300, EC 250F/350F
’21-22 GasGas EX300, EX250F/350F/450F
’21-22 GasGas MC125, MC250F/450F
Availability: Limited stock