Sorry for taking so long to get involved in this thread. We do in fact offer suspension services on the Sport Rhino Shocks.
Our S2 Suspension Center service includes the following:
-Complete Shock Disassembly
-Resurface the shock shaft to reduce friction and extend seal life
-Resurface the Piston
-Completely revalve the shock to your Rhino's specifications, riding terrain, etc.
-Replace all fluids and recharge the shock with nitrogen
-Complete clean shocks with Sonic Clean Technology
All this is done by professionally trained and certified technicians utilizing the very latest in technological advancements and backed by a 100% satisfaction guarantee for only $199.95 per UTV Shock pair.
Turn around time? One week or less in our facility GUARANTEED on standard tuning jobs. Optional spring rates for 4 seat cars? We got them! $79.95 each.
To send your shocks in for service download our S2 Service form here: http://www.hydrodynamicsusa.com/dl/S2%20Form.pdf
If you have any questions you can E-mail, PM or give us a call at 866-GO-iShock or 619-390-2430.