Motorrad-One (“M1”) Stage 4 Stroker Race Engine BMW S1000RR (2010-2018) 
Part Number: 11008561982-04

• Stock-production engine hand-built, making full use of all tolerances and stock-relevant rework and finishing possibilities.
• Significant increase in power and torque vis-à-vis the stock production unit.
• M1 Stage 5.2 “Torque” Racing Camshaft Set
• M1 CNC Ported Racing Cylinder Head with substantially revised ports
• M1 “Torque” 82mm High Compression Racing Pistons and Ring Set
• M1 “Torque” Stroker Crankshaft +4mm
• M1 Racing Valve Springs w/ Titanium Retainers Kit
• M1 Valve Shim Kit
• STM EVO Slipper Clutch and WSBK Plates Kit.
• M1 Racing Forged Connecting Rods
• M1 Racing Engine Case Bolt Kit.
• For use on racing circuits only (not homologated for use on public roads).

• BMW S1000RR/HP4 engine specially hand-built:
• Hand-built by BMW S1000RR racing specialists.
• Hand-picked series components to make the best possible use of the tolerances.
• Maximum power yield while remaining in compliance with the close-to-series-specification, rules.
• Power and torque are superior to the levels achievable by stock-production engines.
• Extended usable rpm band.

Technical Data

• Type: Water-/oil-cooled 4-cylinder four-stroke inline engine, 4 titanium valves per cylinder, 2 overhead camshafts.
• Bore x stroke: 82 mm x 52 mm.
• Displacement: 1047 cc.
• Rated power: (238-246hp) at 15,500 rpm. 
• Max. torque: 99.5 lb.-ft. at 11,500 rpm.
• Compression ratio: Undisclosed.

Options: +ADD M1 WSBK Gearbox Kit w/ revised gearing.

Note on warranty: Installation of the alpha Stage 3 Race Engine renders the motorcycle a high-performance product with a correspondingly short life expectancy on account of its use in motorcycle racing. Consequently, the machine no longer corresponds to the life-expectancy requirements of a road-legal motorcycle. In turn, this means that the warranty is restricted to freedom from defects in the materials.

Recommended in combination with: Motorrad-One WSBK Cooling Radiator Kit.