STM Clutch Slave Cylinder Ø28mm – Ducati Panigale V2 955 (2020–2024) SDU-380

Refined from the ground up in CNC-machined aluminium and finished in a choice of anodised colours, the STM clutch slave cylinder SDU-380 is a precision upgrade that blends Italian engineering heritage with genuine performance gains for the Ducati Panigale V2 955. The 28 mm piston bore is no accident of design — it directly reduces the hand force required at the lever, transforming the feel of every clutch engagement on road or circuit.

Key Features

• 28 mm piston diameter measurably reduces lever effort, delivering a lighter, more progressive clutch action across all riding conditions
• 3D CNC-machined from high-grade aluminium billet for exceptional rigidity with minimal mass
• Colour anodised finish provides lasting corrosion resistance while adding a considered visual detail that matches or contrasts Ducati's own palette
• Available in four anodised colours — titanium, black, silver and red — allowing a coordinated or contrasting build aesthetic
• Direct OEM replacement geometry engineered specifically for the Panigale V2 955, no adapters or modifications required

Design, Finish and Heritage

STM has built its reputation across decades of supplying Italian superbike constructors and privateer race teams with components that earn their place through integrity of manufacture rather than marketing copy. The SDU-380 reflects that lineage: every surface emerges from a multi-axis CNC machining process that leaves no room for porosity, inconsistency or excess material. The anodised finish is not cosmetic afterthought — it is an integral part of the aluminium's surface hardening, sealing the material against brake fluid, road grime and the thermal cycling inherent in track use.

Whether you choose the understated titanium, the clean contrast of silver, the purposeful black or the vivid red, each colour is anodised to the same standard, so the finish holds its character long after the odometer climbs.

Performance on Road and Track

The enlarged 28 mm bore shifts the hydraulic ratio in the clutch circuit, requiring less input pressure to achieve full disengagement. In practical terms this means reduced fatigue during stop-start commuting and sharper, more deliberate clutch releases at the exit of a slow corner on circuit. The Panigale V2 955 already rewards precise inputs — the STM slave cylinder ensures those inputs are never limited by the cylinder itself.

Fitment and Compatibility

This cylinder is designed and verified to fit the following model:

• Ducati Panigale V2 955 — model years 2020, 2021, 2022, 2023, 2024

Specifications