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CRU Products Manual Cam Chain TensionerComes with GasketCRU manual cam chain tensioners are designed to replace the automatic and hydraulic tensioners on high performance enginesThe automatic adjusters can back out when the throttle is closed suddenly at high rpmThis allows the cams to go momentarily out of time, and can result in bent valves and/or serious engine damageHydraulic tensioners have a tendency to put too much tension on the chain guide under high rpm/high oil pressure conditions, resulting in premature wearBoth problems can be eliminated with the installation of the CRU manual tensionerNo matter what the engine does, the cam chain tension will remain constantA CRU manual cam chain tensioner is a must for any kind of performance ridingCRU manual tensioners are CNC machined from billet alloy to exact tolerances for perfect fitFits:Street Fitment97-03 CBR 1100XX Blackbird93-99 CBR 900RR94-03 VF 750c Magna (fits rear only)95-98 CBR 600F399-06 CBR 600F4/F4I98-05 VTR 1000 Super Hawk04/06 CB 600F 59902-07 CB 900F 919ATV Applications87 TRX 250 Fourtrax87-92 TRX 250X93-Up TRX 300EX88-00 TRX 300 Fourtrax87-89 TRX 350 Foreman01-11 TRX 500 Foreman/Rubicon87 ATC 250ES Big Red87 ATC 250SX86 ATC 350X04-05 TRX 450R03-05 TRX 650 Rincon06-11 TRX 680 Rincon