Ohlins BM 678 TTX GP Rear Shock Absorber for BMW Motorcycles

The Öhlins BM 678 TTX Shock Absorber represents the pinnacle of suspension engineering — a direct result of over three decades of world championship road racing and more than 100 World Championship titles. Engineered for serious riders who demand precision, the TTX (Twin Tube X) design delivers a level of adjustability and performance unmatched by conventional shock absorbers.

Key Features:

• Independent high- and low-speed compression and rebound damping — four fully independent adjustment circuits provide an exceptionally wide tuning range with equal force increments throughout, allowing the shape of the damping curve itself to be tailored to any track or riding condition
• Piston-based adjustment design — all preload and rebound changes act directly on the flow of damping oil through the piston, not on the shock piston rod or oil displacement volume, for more precise and consistent tuning
• TTX compression damping technology — unlike conventional shocks where compression damping is a byproduct of reduced pressure on the rebound side, the TTX generates compression force through a positive pressure increase on the compression side, virtually eliminating cavitation
• Minimized internal pressure — the TTX design keeps internal pressures at a minimum, making high-pressure gas reservoirs unnecessary and delivering exceptional suspension response even under short-stroke, high-force conditions
• Piggyback-style reservoir — the remote-mounted reservoir increases oil volume and improves thermal management, resulting in more consistent damping performance and extended damper service life
• Integrated remote hydraulic spring preload adjuster — allows quick, tool-free spring preload changes to suit rider weight and load conditions
• 36mm shock piston — large-diameter piston for improved damping control and sensitivity

The Öhlins BM 678 is a premium, race-derived rear suspension upgrade that translates directly to improved handling, rider confidence, and lap times. Built to exacting tolerances with Öhlins' signature gold-anodized finish, this TTX shock delivers the same technology trusted by MotoGP and World Superbike championship teams.