HENGJIAN hydraulic clutch upper pump assy S7-Z300-3-01

Designed as the original hydraulic clutch master cylinder (upper pump assembly) for the Hengjian Z300 two-stroke enduro platform, this unit restores precise clutch control on S7-Z300 and S8-Z300 models while maintaining factory lever feel and ergonomics.

Main features

OEM Hengjian hydraulic clutch upper pump assembly with manufacturer reference S7-Z300-3-01.
Developed specifically for Hengjian S7-Z300 and S8-Z300 two-stroke enduro motorcycles.
Hydraulic design for light lever action and consistent clutch engagement under load.
Robust construction suitable for demanding off-road and enduro use.
Factory geometry for correct lever reach and comfortable control on the left handlebar.
Direct bolt-on replacement compatible with the original Hengjian hydraulic clutch line and slave cylinder on Z300 models.

Technical overview

Part type	Hydraulic clutch upper pump (master cylinder) assembly
Manufacturer	Hengjian
Manufacturer reference	S7-Z300-3-01
Position	Left handlebar, clutch side
Actuation	Hydraulic clutch system upper pump (master cylinder)
Intended models	Hengjian S7-Z300 / Hengjian S8-Z300 two-stroke enduro motorcycles
Engine platform	Z300 series 293.2 cc single-cylinder, two-stroke, water-cooled enduro platform
Typical use	Replacement of a worn, damaged or leaking original clutch master cylinder on Hengjian Z300 models

Typical applications

This hydraulic clutch upper pump assembly is intended for Hengjian Z300 series two-stroke enduro motorcycles used in trail riding, hard enduro and recreational off-road conditions, where consistent clutch modulation and reliable operation are essential.

Restoring correct clutch performance after impact, wear or seal damage to the original unit.
Preventive maintenance before intensive racing or enduro seasons.
Keeping a complete spare master cylinder assembly ready for rapid service during events.

Specification