CRU Products 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 CRU manual tensioner. No mater what the engine does, the cam chain tension will remain constant. A CRU manual cam chain tensioner is a must for any kind of performance riding. CRU manual tensioners are CNC machined from billet alloy to exact tolerances for perfect fit. Comes with Gasket. **Please see applications below to ensure proper fitment. Fits: Yamaha Street 09, 11-12 TU 250X Suzuki Street 03-08 AN 400 Burgman 82-83 GN125 91-97 GN125E 82-83, 85-88 GN 250 80-82 GN400T Suzuki Off Road 83-90 DR100 82-84, 86-88 DR125 94-96 DR125SE 6-88 DR200 96-09 DR 200SE 90-95 DR 250S/SE 90-99 DR 350/S 78-79 DR370 80 DR400 81-83 DR500 08-09 DRZ 70 03-10/12-13 DR-Z125 83 SP100 82 SP125 MODEL Z 83 SP125 MODEL D 86-88 SP125 86-88 SP200 78-79 SP370 80 SP400 81-83 SP500 Suzuki ATV 83-86 ALT125 85 ALT185 91-01 LT-F160 Quad Runner 86-87 LT-F230 87-98 LT4WD Quad Runner 91-98 LT4WDX King Quad 83-87 LT125 03-04 LT160 Quad Runner 89-92 LT160E Quad Runner 84-87 LT185 87-93 LT230E Quad Runner 85-86 LT230G 85-88 LT230S 89-90 LT 250S Quad Sport 02-07 LTA/LTF 400 Eiger 08-Up LTA 400 King Quads 05-07LTA 700 King Quad 05-Up LTA 750 King Quad 02-06 LTF 250 Ozark 88-02 LTF 250 Quad Runner 07-08 LTF 250 99-02 LTF 300 Quad Runner 04-08 LTZ 250 Quad Sport Returns: If you receive an incorrect item you must contact us within 30 days. If we have made a mistake you will receive a 100% refund including all shipping charges. If you purchased the wrong part or just don't need it anymore you can return it. There will be a 20% restock fee applied to the selling price the buyer is responsible for shipping charges.