FAST FOR ITS TECHNIQUE AND PERFORMANCE Spring preload adjustment is a matter of hydraulic preload activated by hand or with a 14mm Allen key. Adapted to all dampers with hydraulic preload intended for BMW, the small tri-lobed handwheel, thanks to its ergonomic shape, allows easier adjustment without the use of impractical tools.

The compensation chamber is separate from the body for improved fluid cooling and greater freedom of positioning.  

It is connected by a flexible tube made of coated metal braid designed for very high pressures, to improve the shock absorber's response by increasing grip and comfort.

BITUBO CYU31 Rear Shock - Red (Manufacturer Ref: BW053CYU31)

The CYU31 from BITUBO is a rear shock designed for demanding riders. Built around a separate compensation chamber connected to the body by a braided flexible tube, it promotes better fluid cooling and provides useful positioning freedom for installation. Its red finish adds a racing touch to the rear end.

Reliable and adjustable, it features hydraulic preload that can be activated by hand or with a 14 mm Allen key thanks to a small ergonomic trilobe knob. Pressurized with nitrogen and equipped with a floating oil/gas piston, it has a 16 mm diameter piston rod treated for anti-friction and low-friction guide bushings for precise riding response.

• Adjustments: low-speed compression 24 clicks, high-speed compression 20 clicks, rebound 24 clicks, progressive preload
• Center Distance: 8 mm
• Mountings: upper and lower CNC machined heads in aluminum alloy
• Included: specific assembly instructions and Suspension Manual

Ideal for BMW motorcycles equipped with hydraulic preload — for example, the BMW R 1250 GS (and variants) — the BITUBO CYU31 optimizes grip and comfort without false promises: it provides fine adjustments to tailor the suspension to your riding style.