3WF KN Middle Crank (Increased Primary Compression)

[KN Planning CS02-1 3WF KN Middle Crank (Primary Compression UP)]
●Primary compression UP type
Stroke 45.2±0.3mm
(Reference: Normal 42.0mm)
(Compatible models)
JOG 90, AXIS 90 with 3WF engine
(Installation method, points to note)
●Piston skirt cut by about 1mm
(Varies depending on the piston used)
No crankcase modification is required.
●Due to the increased stroke, top-end adjustment is necessary.
●When combined with a normal cylinder,
a displacement of 88.7cc, just within the SB class limit, can be achieved.
*Images are for illustration purposes only, and the design and specifications of the products shown are subject to change without notice. Please be aware.