Description
Wiseco Yamaha Blaster Bottom End Gasket and Seal Kit
The Wiseco Yamaha Blaster Bottom End Gasket and Seal Kit provides the essential sealing components required during a Yamaha YFS200 bottom-end rebuild. Whether you are replacing a crankshaft, installing new main bearings, repairing a transmission, or completely rebuilding the engine, the old gaskets and oil seals should never be reused.
Designed for 1988–2006 Yamaha Blaster YFS200 models, this Wiseco kit gives engine builders a convenient collection of bottom-end gaskets and seals in one package. It eliminates the need to locate several individual sealing components and helps ensure that the engine is properly sealed during final assembly.
Why replace the bottom-end seals?
The Yamaha Blaster uses a two-stroke engine that depends on a properly sealed crankcase to transfer the air-and-fuel mixture through the engine. Worn, hardened, damaged, or incorrectly installed crankshaft seals can allow air into the engine or transmission oil into the crankcase.
An air leak can create a dangerously lean condition, erratic idle, hanging RPM, difficult starting, inconsistent jetting, overheating, or engine damage. Replacing the seals and gaskets while the engine is already apart is inexpensive protection against having to disassemble it again.
Ideal for a complete Blaster engine rebuild
This Yamaha Blaster bottom end gasket kit is recommended whenever the crankcases are split. It is an excellent choice for repairs and upgrades involving:
- Crankshaft replacement or rebuilding
- Main-bearing replacement
- Transmission service
- Crankcase repair
- Bottom-end engine rebuilding
- Complete engine restoration
- Stroker-crankshaft installation
- Oil-pump or internal engine service
Wiseco performance and dependability
Wiseco is a trusted manufacturer of powersports engine components. This kit is made for the Yamaha Blaster application, providing the correct fit required for dependable engine assembly and sealing.
The gasket material is designed to conform to the engine’s sealing surfaces, while the included oil seals replace worn original components. Correct installation helps prevent air leaks, oil leaks, and contamination between the crankcase and transmission.
Professional installation recommended
All gasket surfaces must be clean, flat, and free from old material before assembly. Carefully inspect the crankcases, shafts, seal surfaces, and gasket mating surfaces for damage. Lubricate oil-seal lips during installation and make sure every seal is installed in the correct direction and at the proper depth.
Do not use sharp tools that can gouge the aluminum sealing surfaces. Fasteners should be tightened evenly and to the correct Yamaha specifications.
Every freshly assembled Yamaha Blaster engine should receive a complete leak-down test before starting. A leak-down test confirms that the intake, crankcase, crank seals, cylinder base, and other sealing points are airtight. Never assume that a newly assembled engine is sealed simply because new gaskets and seals were installed.
Product details
- Wiseco bottom-end gasket and seal kit
- Fits Yamaha YFS200 Blaster engines
- For 1988–2006 Yamaha Blaster models
- Intended for bottom-end engine rebuilding
- Helps replace worn or damaged engine seals
- Convenient alternative to purchasing individual components
- Suitable for stock, trail, performance, and restoration builds
- One complete kit per engine
Fitment
1988–2006 Yamaha YFS200 Blaster
Compare the supplied components with your original parts before installation. Kit contents and component appearance may vary by manufacturer revision.
Order from Ken OConnor Racing
Ken OConnor Racing is a full-service motorcycle and ATV engine machine shop specializing in Yamaha Blaster engine machining, rebuilding, and performance work. We understand how critical correct preparation, assembly, and leak-down testing are to the life of a two-stroke engine.
Order your Wiseco Yamaha Blaster Bottom End Gasket and Seal Kit from KOR and get the right components for your next YFS200 engine rebuild.
