MJ9 Cyl. stud kit M7x152mm
With special threads, that are milled by hand, the studs are made of high quality tool-steel. They possess an extremely high tensile strength and hardness, while remaining flexible at all engine temperatures. The threads were modified to make to studs sit firmly in the engine case, once they are screwed in. This solves the problem of old engines that have an unduly high thread play. ‘MJ9+’ studs are suitable for slightly, ‘MJ9++’ studs for extremely worn out threads.
M7x152mm: for FALC/QUATTRINI/POLIN and for Vespa 100/125/PV/ET3/PK80-125/XL/XL2/125 VNA-TS/150 VBA-T4/PX80-150/PE/Lusso/Cosa 125-150
Conclusion: Top quality and new grip for your worn out threads. Ideal for amateur mechanics who are good friends with their cylinder.
Silver steel / M7x152mm
Silver steel with chrome / vanadium alloy, 152mm, 4 pcs.
SIP-TIP: Use a second spanner when you screw the studs in for the first time. That makes it easier.
SIP Community User Marc:
„Before you damage your crankcase, replace your engine studs.“