APE Pro Series Cam Chain Tensioner

 APE manual cam chain tensioners are designed to replace the automatic and hydraulic tensioners on high performance engines. The automatic adjusters can back out when the throttle is closed suddenly at high rpm. This allows the cams to go momentarely out of time, and can result in bent valves and/or serious engine damage. Hydraulic tensioners have a tendency to put too much tension on the chain guide under high rpm/high oil pressure conditions, resulting in premature wear.

Both problems can be eliminated with the installation of the APE manual tensioner. No mater what the engine does, the cam chain tension will remain constant. An APE manual cam chain tensioner is a must for any kind of performance riding.

APE manual tensioners are CNC machined from billet alloy to exact tolerances for perfect fit.

WARNING:

CAUTION: INCORRECT INSTALLATION OF A MANUAL CAM CHAIN TENSIONER MAY RESULT IN SEVERE ENGINE DAMAGE. IF YOU ARE NOT CERTAIN HOW TO INSTALL THE CAM CHAIN TENSIONER THEN IT IS ADVISED THAT IT BE INSTALLED BY A SHOP WHO IS FAMILIAR WITH THIS PROCESS.

IMPORTANT: WHEN REPLACING ANY HYDRAULIC OEM TENSIONER WITH A MANUAL TENSIONER, IT IS IMPORTANT TO MAKE SURE THAT THE OIL PASSAGE THAT SUPPLIED THE OEM TENSIONER IS BLOCKED OFF. FAILURE TO DO SO COULD RESULT IN A LOW OIL PRESSURE SITUATION.

INSTRUCTIONS

To set the tensioner adjustment, rotate the engine forward while screwing the tensioner bolt in. When you feel the engine tensioner parts (guide, rollers, etc.) make contact with the moving cam chain, back the tensioner bolt out 1/4 turn and tighten the jam nut. (For the finer pitch thread on the APE Pro Series tensioner it is advised to back the tensioner up 1/2 of a turn.)

DO NOT over-tighten the cam chain, as cam chain giude damage could occur. Be sure jam nut is tight against the tensioner body when complete.

LINKS

Link to a YouTube video of an APE tensioner being installed in a 2009 Yamaha R1 here.
Step-by-step installation on a GSXR SRAD motor in this forum - here.
Step-by-step installation on a Honda CRF450 here.
Step-by-step installation into a 2014 Yamaha FZ-09 here.

A no-stone-left-unturned installation of the APE Pro Series tensioner into a 2005 GSXR1000. Very detailed and cool video here.

Customer Reviews

APE Pro Series Cam Chain Tensioner fits the following vehicle(s):

• Part Number fits: ()