Derived from the multi-award-winning XXF, the Mono XXZ, until now reserved exclusively for our official teams, is now at the cutting edge of technology, with a completely new design and a host of technical innovations, including 4 settings: compression and extension at low and high speeds, with new configurations designed to give the rider the best possible feeling. Inside, it has been updated with technical solutions that optimise the fluidity of moving parts, improve the damping coefficient and increase stability at high temperatures, not forgetting the use of lightweight materials to reduce overall weight.The Ø14mm piston blade increases fluidity and the Ø30mm piston reduces the mass of fluid in motion for a faster response to stresses. Particular attention has been paid to increasing the sensitivity and precision of adjustments. XXZ is designed to reduce inertia and provide immediate control of suspension oscillations. The aim is to provide the rider with greater driving precision and grip than ever before, as well as uniform tyre wear thanks to instant control of the forces at play. This gives the rider maximum support when cornering, even at extreme angles of inclination or during rapid changes of direction, maximum confidence in opening the throttle on all types of track, and perfect stability of the rear end even during the most violent accelerations.

BITUBO XXZ31 Rear Shock Absorber (manufacturer reference Y0149XXZ31) — designed for demanding roadsters, the XXZ31 incorporates technical solutions derived from BITUBO's competition models and makes them accessible for the road. This mono shock features a 14 mm rod and a 30 mm piston, a combination designed to reduce the mass of fluid in motion and enhance the responsiveness to effort.

The design includes fine adjustments so that the rider can precisely tune the behavior of the rear: compression and rebound at both low and high speeds, hydraulic preload, and height adjustment. Lightweight materials and optimized components aim to decrease inertia and improve damping consistency at high temperatures.

• Piston diameter: 30 mm
• Rod diameter: 14 mm
• Adjustments: rebound, double compression, hydraulic preload, height adjustment

• Low-speed compression: 24 clicks
• High-speed compression: 20 clicks
• Rebound: 24 clicks
• Hydraulic spring preload: 12 mm = 24 clicks
• Spacing: 8 mm
• High-speed rebound: 20 clicks

Version XXZ31V2: compact hydraulic preload adjustable up to 10 mm (=20 clicks).

Common applications: YAMAHA YZF‑R1 M (2024), YAMAHA YZF‑R1 (2024), YAMAHA YZF‑R1 M (RN49 2019).