Malossi MHR RHQ Racing Crankshaft – Yamaha BW’s / Slider (Minarelli Vertical)

High-quality MHR RHQ racing crankshaft from Malossi for Minarelli vertical engines. This full-circle HPC crankshaft (High Primary Compression) improves crankcase pre-compression, resulting in better cylinder filling and a higher, more aggressive powerband.

Designed for sport and racing setups up to 16,000 rpm, it offers excellent durability and smooth running thanks to precise balancing and premium materials. Ideal for 70cc sport and racing cylinders, including more powerful setups.

Technical Specifications

• Engine type: Minarelli vertical
• Piston pin: 10 mm
• Stroke: 39.3 mm (standard)
• Connecting rod length: 80 mm (standard)
• Type: Full-circle HPC crankshaft
• Includes small end bearing: 10 × 14 × 13 mm

Perfect choice for reliable performance-oriented engine builds.