Top quality, precision ground Lambretta clutch shims. These sit on top of the gearbox cluster between the crownwheel / spider and the gear box endplate cluster bearing. 
 Fed up with the poor quality remade Indian clutch shims MRB have made these in the UK from hardened steel to the correct tolerances to fit perfectly on all series 1, 2, 3 and GP / DL engines whether tuned or standard.
Comes in the following sizes:
0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm