Originally Posted by
Lille-bror
Just for the record:
What size is the front and rear bearing on a Plus 4 2009 engine (the one with standard and turbo head included).
Thanks

almost all the front bearings on .21 and .28 off road engines is 7x19x6mm , novarossi's newer engines come with 7x19x6x6.3mm front bearings .
no need for a shim behind the collet anymore