Clutch plates NEWFREN HONDA CR 80 for "Hartz4" clutch CR 80 for "Hartz4" clutch MMW for Vespa 50-125/PV/ET3/PK50-125/S/XL/XL2 4 discs, sintered, thickness 3,0mm, RACE- Tuning, for the highest requirements Attention all power-hungry tuners, your wait is over! The MMW tuners have already made history with their 7-clutch plate style motorcycles for the Lambretta, winning test scooter magazines for 'heavy clutches'. The Hartz4 clutch is the equivalent small frame engine: a 4-clutch style motorcycle. The PIAGGIO clutch that small frame engines are equipped with three clutch plates. The higher the performance clutch combinations have separation problems due to the lack of space for their extra plates. The Hartz4 clutch solves this problem through the use of a sintered surfacing friction plate of the clutch that is manufactured with a special mix of materials and having multiple grooves to channel excess engine oil away from the fiction plate contact area. Improved oil channeling raises the thermal range of the clutch, the thinner and harder surfacing friction plate maintains lower separation distances, ensuring cleaner separation in all situations. The higher thermal resistance also ensures a more constant friction release point and consequently better definition. Due to the extra quarter friction plate and the width of the higher friction areas, torque delivery is noticeably more direct and also more powerful. This clutch has established itself through the development of extended, series race ESC and DBM successfully in combination with engine configurations of 30hp or even more. Depending on the model and the assembly of the crankshaft clutch housing it may require an additional 2mm thick spacer washer. Result: Finally modern technology of motorcycle clutch plates for Vespa scooters. Well thought out through the quality fit made in Germany, it makes this kit worth every penny. Note: Does not fit DRT's multi-gear pin. High end clutch An extremely robust CNC full clutch basket made of extremely tough hardened steel, 4 sintered friction plates, 3 plain plates, 10 clutch springs to PKXL2 stiffness grade L, includes primary auto repair kits, 1mm spacer gasket for the cover of the clutch and a mounting / removal tool. SIP-TIP: A new Keyway, clutch nut and lock washers are a must for tuned engines. Don't forget the gear oil (SAE30 or even SAE80W90 for carbon fiber clutch plates) for an overnight soak before fitting!