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.

For more information, email to cranks@aperaceparts.com


Lightened 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

For more information, email to cranks@racecranks.com



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:

Complete Machine Work Service
Complete Cylinder Head Service
Transmission Service

Beside the work-related services APE provides, we also offers stroker cranks, Carrillo connecting rods and other crank-related gear.

For more information, email to cranks@racecranks.com


Stroker Crankshafts

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

LC750-STKR         Stroke four cylinder up to 5mm
LC750-STKR+6    Stroke 6mm+

APE provides 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.


Crank Work
When shipping a crankshaft to APE please read our shipping instructions carefully. Include an APE work order form when sending in parts for labor or repair.

Ship parts to:
7347 Rosamond Bl.
Rosamond, Ca. 93560

LC750 Lighten and Balance crankshaft $285.00
LC750-MAG  Magnaflux crankshaft 60.00
LC900 Stroke Crankshaft/inline 4 cyl.with Race Balance 1099
LC905 Stroke 6mm+with Race Balance 1199
LC750ZX12 Lighten/balance ZX12 or ZX14 crankshaft 299.00
LC751 Remove balls and tap oil holes for set screws ( with stroker) from $150
LC753 Race balance only 75.00
LC754 Lighten and race balance: inline 4 cylinder automotive 376.00
LC755 Remove counterbalance gear 40.00
LC761 Repair one (1) damaged crank journal - nitrided 399.95 plus balance
LC761-2 Repair two (2) damaged crank journals - nitrided 499.00 plus balance
LC762 Repair crank journal - twin cylinder, ea. - nitrided 349.00
LC763 Magnaflux, straighten, polish crankshaft 100.00
LC766 Nitride, straighten, and polish crank 265.00
LC770 Assemble rods on crankshaft 120.00
LC770CR Install customer's rods 185.00
LC775 Shot Peen 4 rods 125.00
LC800 Weld four cylinder roller bearing cranks 89.00
LC808 Complete rebuild and welding 4 cylinder roller cranks From $1000