Service Kits
About Service Kits
Service kits bundle the wear parts for one specific job so you can refresh a component without hunting for each piece. The listings here cover two different jobs. Top end service kits, named for machines such as the Suzuki LT-R450 QuadRacer and the Yamaha YFZ450, are for the upper part of the engine. The other listings are suspension service kits for Showa and KYB shocks, marked front, rear or front and rear.
For a top end kit, the contents depend on the maker, so read the listing before you buy and compare it with the parts your engine needs. The top end covers the cylinder head, valves and valvetrain, and often the piston and cylinder, so the job calls for a service manual and the right tools. For a shock kit, match the shock rather than the machine: the listings give the brand and model number, such as Showa 12536 or KYB 1440, and you can usually find that number on the shock body or in your service manual. Check whether the kit is for the front, the rear or both.
Brands in this category are Hygear Suspension, Kibblewhite and KPMI. Pick your machine in the Ride Finder at the top of the page to narrow the list. If the top end needs more than a kit, Engine Rebuild Kits & Components, Pistons, Rings & Piston Kits and Gaskets, Seals & Kits are in the same group, Engines & Engine Parts.
FAQs on UTV and ATV service kits
What does top end mean on an engine?
The top end is the upper part of the engine: the cylinder head, valves and valvetrain, and usually the cylinder and piston as well. A top end service kit is meant for refreshing those parts when they wear, loose compression or burn oil.
How do I find the right shock service kit?
Check the shock body or your service manual for the brand and model number, for example Showa 12536 or KYB 1440, and match it to the listing. Also check whether the kit is for the front, the rear or both ends. Machines can use different shocks from one model year to another.
Can I install a service kit at home?
Some owners do, with a service manual and the right tools. Valve and cylinder work needs measuring tools and care, and shocks hold pressurized parts. If you are unsure, have a shop do the work, and follow the maker's instructions for the shock.
How do I know when a shock needs servicing?
Common signs are oil leaking from the shock body, a ride that bounces or feels harsh or soft, and damping that fades during a long ride. Check your manual for the service interval, and inspect the shock before concluding it needs a full rebuild.
What should I check before ordering a top end service kit?
Find out what is actually worn. A compression test and an inspection of the cylinder, piston, valves and guides show which parts need replacing. Then compare that list with the kit's contents, since kits differ by maker, and add any missing parts separately.
