APE is known world-wide
for our race prep on four cylinder plain-bearing crankshafts.
The who's who of racing depend on APE cranks for performance
and dependability. Over 28 years experience modifying motorcycle
cranks is available for your motorcycle.
APE experts have reworked
every kind of four cylinder plain bearing motorcycle crank there
is. From the old Honda sohc 750 to the latest GSXR1000.
The advantage of a lightened
crank... Much quicker throttle response, less power wasted trying
to turn a heavy crank means more power to the rear wheel. The
engine accelerates faster. Harder pull off the corners. Reshaped
counterweights move through the oil mist with less drag. Lighter
cranks have less gyro effect.
and Balanced Cranks
APE completely machines the crank counter-weights to remove weight
and narrow the profile (sometimes called "knife-edging".)
The oil holes are fluted on certain models to keep more oil at
the bearings. The crank is then balanced on a state-of-the-art
computerized balancing machine to extremely tight tolerances.
machine Work part # LC750
As all racers know, heavy
wheels and brakes spinning fast act like gyroscopes, and resist
being moved off their axis, such as leaning the bike over for
cornering. Same with the crank.
The heavier the spinning
crank, the more it resist being tilted when cornering. Light
cranks not only make more power, but help improve handling.
APE is a complete aerospace-type
CNC machining facility in which we manufacture our world-famous
racing products. These facilities are all on-site at the APE
race shop. Besides the services listed below, APE also offers:
APE offers crankshaft stroking.
This process involves moving the rod journals away from centerline
to increase the overall stroke in the engine. This modification
can be performed on cranks that have damaged rod journals, as
well as good cranks. Contact the APE tech department for stroker
recommendations for your engine: 661-256-7309
four cylinder up to 5mm LC750-STKR+6 Stroke 6mm+
online pricing as a service convenience only. These prices are
not binding and are subject to updates without notice. Though
we try hard to maintain accurate up-to-the-minute pricing it
is best to call APE and check with the desk for pricing if you
have any questions.
ALL PLAIN BEARING
REPAIRS NOW INCLUDE FULL NITRIDING