Clutch flow and restrictor valves

Clutch flow and restrictor valves for hydraulic clutch systems are used to control clutch engagement. The valve has a check valve function, so the flow is restricted in one direction while allowing free flow in the opposite direction. This allows the clutch to engage more progressively without making clutch disengagement slow or imprecise.

By regulating the fluid flow between the master cylinder and slave cylinder, clutch engagement can be adjusted to suit the vehicle’s power, tyre grip and drivetrain setup. This reduces harsh shock loads in the gearbox, propshaft, driveshafts and differential, especially on vehicles with heavy-duty sports clutches, sintered clutches, twin-plate and triple-plate clutches.

A adjustable flow and restrictor valve is especially relevant for motorsport, drag racing, drifting, circuit racing, off-road use and tractor pulling, where an aggressive clutch can place heavy stress on the drivetrain. With correct adjustment, you get more controlled power transfer during launches and hard gear changes, while the clutch can still release quickly through the check valve.

In this category, you will find flow valves, restrictor valves, check valves and accessories for hydraulic clutch systems for project cars, motorsport and high-performance vehicles.