Crankshaft

Connecting Rod Set

As with their gearbox, OSSA did not sell any crankshaft parts separately.  For reference, the complete OSSA crankshaft (P/N 3000020211) had an MSRP of $725 USD back in 2013.

Fortunately, the GasGas connecting rod set (rod, pin, big end and small end bearings) is a prefect replacement.  It is  part number MT280212100 and had an MSRP of $266 USD in 2024.

GasGas also offers the big end bearing alone as part number MT32050GG-AIZ-1.  It has an MSRP of $35 USD.

Credit: Matteo    OSSA and GG rods side by side

Credit: Matteo    OSSA and GG rods side by side

Credit: Matteo    Pressing the crankshaft back together

Credit: Matteo    0.55mm side clearance

Credit: XiU-rdi    GasGas Main Crank Bearing 91008-xgf-0004-2

Crank Main Bearings


XiU-rdi sells a replacement GasGas bearing, part number 91008-xgf-0004-2.  This is a special 6205 bearing measuring 25 x 52 x 15 and incorporating a 30 x 47 x 6 seal.  Both sides are identical, and two bearings are required.  The price is about $52 each as of 2024.


However, in order to use this bearing for the  OSSA, you must accurately grind a slot on the outer sleeve for the locating pin.