Rear Shock Rebuild
Have your motorcycle trials, rear suspension shock absorber rebuilt with new oil, seals, the main shaft bush and finally recharge the nitrogen chamber.
Work carried out by a Ohlins technician with genuine Ohlins parts.
Repairable shocks:
All Ohlins trials rear shocks.
Olle & R16V shocks are repairable, a small valve will be added to these on the bottom of the shock to allow re-pressurising of the nitrogen.
GasGas, Beta and Sherco Sachs shocks can now also be repaired but due to the extra work involved there is a extra charge.
All Reiger trials shocks.
Showa shocks found on the Montesa Cota 315R and 4RT.
Please check under the bump stop for signs of pitting, or any scratches, wear etc if there is any the shaft will need replacing, this will incur an extra charge.
For more details on how to send your shock to us, please complete and print the: 
SHOCK REBUILD REQUEST FORM
Why you should service you shock.
The oil in the rear shock has a high Viscosity Index (VI) this keeps the oil at a similar viscosity over a wider temperature range keeping the damping characteristics closer to the same wether the shock is hot or cold. The oil does this with polymer chains that unravel as the oil warms up stoping the oil thinning out, as the oil is used these chains get broken up into smaller pieces so the oil becomes thinner than intended so the shock loses a bit of damping when hot and it can lead to more wear inside the shock.
A lot of shocks have an anodised aluminium main cylinder tube and if you leave it too long before servicing, this anodised surface wears away. Anodising creates a very thin layer of extremely hard aluminium oxide on the surface of the aluminium, this hard layer helps prevent the soft aluminium from wearing away, aluminium oxide because it is so hard is also used as an abrasive so when the anodised surface wears you get abrasive particles floating around inside the shock which increases the wear rate hence why it is very important to service the shocks on a regular basis.
Most Shocks we get in for a service have lost most of their damping due to wear internally or air mixed in with the oil, on a few shocks the oil seal has failed and it is leaking oil, if the leak continues it can allow the floating piston to come into contact with the end of the shaft, this usually makes the shock feel like it has bottomed out earlier than it should as the nitrogen charge behind the floating piston increases the spring rate of shock drastically as the shaft hits the floating piston.
On a lot of Trials shocks the seal fails due to a chip or scratch in the chrome plated shaft, these occur because of muck or stones hitting or rubbing against the shaft, this is why it is very important to keep the shock covered up with a mud flap to stop dirt coming off the back wheel heading straight on to the shock. It's also worth checking under the bump stop as these can get packed with muck and slowly grind there way through the chrome plating.
