Lambretta Crankshaft, 58 x 107mm, Gp, SIP
Probably one of the best simple crankshafts on the market, these are extremely tight on the crankpins unlike most cranks out there.
These SIP crankshafts are excellent quality and are manufactured by Primatist in Italy.
These are based on a standard Gp designed crank, no balance weights to come loose.
Comes in a 58 mm stroke with a 107mm con rod.
While it doesn’t offer the setup flexibility of a 110mm con rod, it’s ideal for easy installation with Race-Tour 195/200 and 225/230 cylinder kits, making it a great choice for straightforward, reliable builds.
Supplied complete with:
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Race-spec con rod
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2 small end bearings (1 standard and 1 wide)
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Race big end bearing
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Crank shims (as all quality cranks should be)
We've come across some SIP crankshafts that are not tapped deep enough on the drive side hole, it's advised to run the special MBU0917 8 x 1mm tap down the threads so the drive bolt doesnt get damaged.