quick view Add to Cart Royal Enfield Gearbox , 350cc, 4 Speed, Pre Unit(Damaged) MSRP: £200.00 Royal Enfield Pre Unit 4 speed Albion Gearbox, suitable for 350cc Single, We have not tried to select gears with this, but would suggest a full rebuild would be a vast benefit. Sold as... Add to Cart Add to Wish List Add to My Wish List Create New Wish List