Malossi MHR RHQ Crankshaft 12 mm – Racing Full-Cheek Crankshaft for Derbi D50B0

If you are designing your Derbi D50B0 engine for uncompromising performance and durability, the Malossi MHR RHQ Crankshaft (12 mm) is a truly powerful foundation. The racing full-cheek crankshaft was developed for geared mopeds with Derbi D50B0 – "RHQ" stands for Racing High Quality and that is exactly what you get here: precise workmanship, high-quality materials, and a design for high revolutions.

With a speed stability up to 16,000 rpm, this crankshaft is ideal for ambitious setups. Malossi relies on nickel/chromium/molybdenum steel for maximum durability. Thanks to the full-cheek construction, a significantly higher primary compression is achieved – this improves the filling rate and supports clean power delivery up to high revolutions. Additionally, the flow-optimized surface finish ensures that performance-reducing turbulence in the crankcase is minimized.

Not the cheapest crankshaft in the range – but clearly one of the best from tuning specialist Malossi.

Features & Benefits

• Racing full-cheek crankshaft from Malossi for Derbi D50B0 engines
• RHQ (Racing High Quality) – high-quality material and manufacturing quality
• 12 mm version
• Speed stable up to 16,000 rpm
• Nickel/chromium/molybdenum steel for best durability
• Full-cheek construction for higher primary compression and optimal filling rate
• Flow-optimized surface reduces turbulence in the crankcase

Technical Details

• Type: Racing crankshaft / full-cheek crankshaft
• Engine: Derbi D50B0
• Pin size: 12 mm
• Speed stability: up to 16,000 rpm
• Material: Nickel/chromium/molybdenum steel
• Part number: M5312990
• OEM No. (for comparison purposes): 5312990

Compatibility (Vehicles with Derbi D50B0 Engine)

Fits many vehicles with Derbi D50B0 engine, such as Aprilia SX 50, Derbi Senda 50 and Gilera SMT 50 – but also numerous other models from the list.

• Aprilia: SX 50 (Derbi engine), RX 50 (Derbi engine) 2006, 2017, RS 50 (Derbi engine) 2006, RS4 50 (Derbi engine) SBK Replica 2011, 2017
• Derbi: Senda 50 (Derbi engine) 2006-2011, DRD Pro 50, Senda 50 SM X-Race 2006-2010, Senda 50 DRD SM X-Treme Ltd Edition 2011-2013, Senda 50 SM X-Treme 2006-2013, Senda 50 DRD SM Evo 2009-2011, GPR 50 Nude 2006-2012, Senda 50 DRD R Racing 2006-2012, Senda 50 DRD SM Pro 2006-2011, Senda 50 R X-Race 2006-2010, Senda 50 DRD SM Racing 2006-2010, GPR 50 Racing 2006-2018, Senda 50 R X-Treme 2006-2013, Senda 50 DRD SM Racing Ltd Edition 2007-2008, Senda 50 SM DRD X-Treme Pro Pro Racing 2013-2018, Senda 50 R DRD Racing X-Treme X-Treme Pro 2013-2015, Senda 50 SM DRD Racing Pro 2011-2012, Senda 50 DRD R Pro 2006-2011
• Gilera: RCR 50 ZAPG11D ZAPABA01 2006-2011, SMT 50 SM ZAPG12D 2006-2010, SMT 50 SM Racing 2011

Why Malossi MHR RHQ?

Malossi has been one of the top addresses in 2-stroke tuning for years. With the MHR RHQ series, you get racing components designed for high revolutions, clean flow, and maximum durability – perfect if your Derbi D50B0 setup should not only be fast for a short time, but permanently reliable.