CAMS - RETAINERS - VALVE SPRINGS

APE CAMSHAFTS APE cams for the KZ/GPZ Kawasaki are precision ground on hardened billets. These are new cams with no core required. **Note that J-Models and GPZ1100s with the hy-vo style chain must use APE cam sprockets #ACS1100K. All of the cams listed on this page require cam clearancing in KZ-type heads, and most GPZs. NOTE: APE #K410 billet cams are temporarily unavailable. For 410 cams use hardweld number below (K410-W) and send good cores. K410 .410" LIFT 266deg. Duration @ .030" Hot street and strip thru 1100cc. Great road-race grind. Best all-around cam available for 1015/1075cc motors. APE valve springs required. Top shims okay. Will not work with stock pistons. Std (1.110") base circle. One of the most popular Kawasaki cams ever sold. $699.20 TEMP Unavailable K410-W Same specs as K410. Hardweld regrind of customer's core. Good core required $759.00 K435 .435" LIFT 266deg. Duration @ .030" Hot street 1100 thru 1400cc. Drag race only in smaller motors. APE valve springs and shim-on-bottom tappets required. This is the largest cam we recommend for street motors as larger ones wear out valve springs rapidly. 1.080" base circle. $699.20 K435-W Same specs as K435. Hardweld regrind of customer's core. Good core required $759.00

Z1900 /1000/1100** (see above) ('73-'84)

Kawasaki KZ650 KZ750, GPZ750 DOHC

SPECIAL PRO STOCK GRINDS AVAILABLE UP TO .622" LIFT. CONTACT OUR TECH DEPT. FOR DETAILS.

VALVE SPRINGS

World famous APE valve springs are made from premiun chrome silicone wire for consistent pressure and excellent fatigue life. Racers as well as street riders have come to depend on APE springs for winning performance. For use with any high-lift cam and/or agressive camshaft profile.

PDF instructions for setting valve springs using assembled height method.

VALVE SPRING SHIMS

.060", .030" and .015" thick valve spring shims. A variety of IDs and ODs available.

Click here to see APE's complete list of valve spring shims.

TITANIUM VALVE SPRING RETAINERS

APE valve spring retainers are machined from aircraft quality titanium bar stock in the APE plant on the latest state of the art computerized CNC machinery.CNC machining allows us to offer such advantages as bored taper keeper holes for exact keeper fit. Special gauging fixtures allow dimensions to be held close to provide exact installed heights when assembling the cylinder head.
APE titanium retainers are shorter than stock to provide additional retainer to valve guide clearance for high lift cams.
APE is the only manufacturer of motorcycle retainers that also builds cylinder heads.
We know how they have to fit, how they have to clear the bucket, etc. No other manufacturer can offer this expertise.
You might think this extra precision is expensive.The fact that we are the manufacturer allows us to provide these super precision retainers at a price everyone can afford. See the chart above for applications.
NO MATTER WHO BUILDS YOUR CYLINDER HEAD, INSIST THAT THEY USE APE TITANIUM RETAINERS.

TVSRK1000 Shim on bottom retainers, set of 8 - $189.00

TVSRK1000-600 Shim on bottom retainers, set of 8
(Fits Manley / PSI Pro Stock Springs) - $189.95

SHIM-UNDER TAPPETS

APE tappets locate the shim under the tappet to eliminate the possibility of the shim being spit out of the cylinder head. This is a must with cam lifts over .410 in a Kawasaki. The top surface to the shim button surface is actual Kawasaki size so you don't sacrifice shim sizes. APE tappets require use of APE titanium valve spring retainers.

VALVE STEM HEIGHT GAUGE

APE precision valve stem height gauge for Kawasakis 650 thru 1100 2 valve motors allows you to set the valve stem height so that it will fall into the middle of the shim range. A must when doing valve jobs, installing big valves, or working with cams that have reduced base circles.

VHG1080 1.080" Base circle

VHG900 .900" Base circle

VHGZ11WEB Special height for Kawasaki ZX10 / 11 for using Web reduced base circle cams.

ALL HEIGHT GUAGES - $24.50