Description
If your Massey Ferguson’s speedshift transmission is acting up—slipping under load, grabbing harsh when it should shift smooth, or just refusing to change ranges—worn friction discs are usually the problem. This handy 8-disc kit gives you all the components needed to rebuild one clutch pack in your speedshift unit, bringing back that seamless power shifting that makes these tractors so efficient when you’re trying to get work done.
What You’re Getting
- Complete set of 8 friction discs engineered for the demanding conditions inside speedshift transmissions
- Heat-resistant construction that handles the constant engagement and high pressures of power shifting
- Quality friction material provides smooth engagement without the harsh grabbing that damages other parts
- Direct replacement for worn factory discs—no modifications needed
Built for Real Farm Work
These speedshift transmissions were game-changers when Massey Ferguson introduced them. The 300 series and 4200/4300 series tractors could shift on the fly without clutching—upshift for transport, downshift for heavy pulls, all while keeping the power flowing. Whether you’re running a 375 on hay duty or pushing a 4270 through heavy tillage, that speedshift system lets you match your ground speed to conditions without losing momentum.
Made to Last
Speedshift clutch packs work hard, engaging and disengaging constantly as you adjust speeds throughout the day. These discs are built to handle those high pressures and temperatures while maintaining consistent friction characteristics. The quality construction resists the glazing and burning that happens with cheaper discs, keeping your shifts smooth season after season.
Good to Know
Remember, complete speedshift rebuilds need 2 sets of this kit per tractor, so plan accordingly. This is major transmission work that requires splitting the tractor and complete disassembly of the speedshift unit—definitely a job for experienced mechanics with the right tools. When you’re doing the rebuild, replace all the seals and O-rings while everything’s apart, and make sure hydraulic pressures are set correctly when you’re done.
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