BOS-2 piston kit

Piston with double-acting Blow-Off system for Showa BFRC and Öhlins TTX shock absorbers. The kit allows the transformation from the stock blind piston to the AlcoTech piston in ERGAL equipped with calibrated passages and shim valves tuned to specifications for controlling the compression and rebound phases.
The Kit consists of:

• Steel piston support pin
• ERGAL piston with surface hardening, complete with PTFE ring and specific calibrations
• Adjustable valve calibrations

Thanks to the kit, it is possible to maximize the performance of twin-tube shock absorber-pump systems.