Reinforced Gearbox Cover Malossi MHR – for Minarelli Long Engine Block

Description

The Malossi MHR gearbox cover is highly recommended even for mild tuning setups (from 70cc upwards).
Original gearbox covers for Minarelli engines have a weakness — the gearbox shafts are only slide-mounted in oil-lubricated bushings, which causes increased friction and wear.

The Malossi MHR cover eliminates this issue by using high-quality needle bearings, which significantly reduce friction and improve gearbox reliability. This also greatly decreases the risk of engine case damage due to shaft play or gearbox blockage.

✅ Fits: Minarelli long engine block
✅ Reduced friction and improved transmission efficiency
✅ Includes needle and ball bearings
✅ Designed for use with Malossi Overrange kits (from 2008 version onward – no modification required)
⚠ Note: Minor housing modification is still required when using Polini Evolution kits

Bearings:
– Ball bearing: 17×40×12 (C4)
– Needle bearings: 14×20×12 and 22×28×16

An ideal choice for anyone looking to increase the durability and reliability of the transmission assembly on tuned scooters with Minarelli engines.