Motorcycle clutch specialist since 2006
From CG125 commuters to 400cc ATV powertrains, Shengde manufactures wet multi-plate clutch assemblies, friction discs, steel plates and centrifugal clutches that hold their torque after 20,000 km. One factory, full process control, exported to 30+ countries.
Trusted by importers, distributors and OEM programmes in 30+ countries
Why Shengde
We do not assemble other people's parts. Forging, machining, heat treatment, friction-material bonding, balancing and testing all happen inside our own plant — which is how we keep tolerances and lead times under control.
65Mn spring steel, 20CrMnTi alloy and ADC12 die-cast aluminium are sourced from state-owned mills, with mill certificates traceable to every batch number.
Paper-based and Kevlar friction linings are bonded under controlled temperature and pressure, then cured and measured so the friction coefficient stays between 0.13 and 0.16 μ.
Austenitising, quenching and tempering are run in sealed furnaces. Steel plates hold HRC 42–46 and splined hubs hold HRC 58–62 for wear and impact resistance.
CNC turning, broaching and grinding keep plate flatness ≤ 0.05 mm and basket runout ≤ 0.08 mm, eliminating clutch drag and judder.
Every clutch assembly is dynamically tested and every cover is air-tightness checked before packing. Inspection reports travel with the shipment.
Send a sample, drawing or OEM part number. We reverse-engineer, build a prototype within 15 days and support your private label and packaging design.
Product range
Twelve core product families covering the most common engines in Asia, Latin America and Africa — plus custom development for anything not listed.
Complete wet multi-plate clutch sets, pre-assembled and dyno-tested, ready to install.
All productsFriction disc sets, 65Mn steel plates and complete friction-plus-steel clutch kits.
All productsHeavy-duty spring kits, splined centre hubs, outer baskets, pressure plates and covers.
All productsDry centrifugal clutches and shoe sets for GY6, AN, CH and Wave scooter platforms.
All productsComplete 5-disc clutch assembly for Honda CG125, CG150 and CG200 engine families.
6-disc performance clutch assembly for CB150F, CB200 and XR150 engines.
Complete dry centrifugal clutch assembly for GY6 125cc and 150cc scooters.
Five-piece paper-based friction disc set for CG and CB commuter engines.
Five friction discs, four steel plates and six springs in one service kit.
Six Si-Cr alloy springs with 15 % more clamp load than OEM for modified engines.
Inside the clutch
Understanding the stack helps you specify the right kit. Our engineers are happy to review your engine's torque curve and recommend plate count, lining compound and spring rate.
The alloy basket carries the primary drive gear and holds the outer tabs of the friction discs.
Paper-based or Kevlar-lined friction discs alternate with steel plates; more discs equal more torque capacity.
65Mn steel plates key into the splined centre hub (20CrMnTi), which transmits drive to the gearbox input shaft.
Six springs clamp the stack through the pressure plate. Spring rate and free length set lever feel and slip resistance.
Applications
Different markets stress clutches in different ways. Delivery riders in congested cities wear out friction discs; racers punish heat capacity; cargo tricycles demand pure torque. We tune the stack for each duty cycle.
100–150cc street and delivery motorcycles doing high-stop-and-go city mileage. Kevlar-blend linings extend disc life under repeated half-engagement.
150–250cc performance engines that need sharper engagement, higher clamp load and heat stability during aggressive downshifts.
Sustained highway running with luggage load. We target smooth modulation and minimal fade across long continuous operation.
Track and rally use where a predictable launch matters. Billet-quality hubs, shot-peened plates and uprated springs available.
GY6, AN and CH platforms with dry centrifugal clutches. Tuned shoe geometry and lining compounds are matched to engagement RPM.
Heavy-duty and utility vehicles carrying constant torque loads. Reinforced 7-disc stacks and hardened hubs for torque up to 95 N·m.
Manufacturing capabilities
Six integrated production stages under one roof keep quality decisions local and lead times short.
Incoming steel and alloy batches are verified against mill certificates; hardness and chemistry are re-checked before release to production.
Precision blanking of 65Mn steel and hot forging of alloy hubs give a dense grain structure with predictable fatigue behaviour.
Turning, broaching, slotting and grinding on CNC centres produce splines, slots and faces within ±0.02 mm.
Sealed-furnace carburising for hubs, quench-and-temper for plates; hardness and case depth are logged per batch.
Friction material is bonded, cured and ground to thickness, then friction coefficient is sampled from every production lot.
Kits are assembled, torque-tested on dynamometers, air-tightness checked and packed with batch traceability labels.
Quality assurance
Quality control is not a final gate here — it runs through incoming material, in-process checks and final testing, with records kept for every batch we ship.
Zero release without hardness, dimension and chemistry verification against mill certificates.
First-article approval plus hourly patrol checks on thickness, flatness, tooth profile and surface finish.
Torque capacity, slippage and engagement RPM verified on dynamometers; covers air-tightness tested at 0.2 MPa.
Each set carries a batch code linking back to steel lot, heat-treatment record and inspector. Claims are answered with data.
Documents available on request for your customs and QA files.
Neutral or private-label packing, protected for sea freight and ready for your distribution centre.
Questions buyers ask
Tell us the model, quantity and destination port. We will confirm fitment, quote factory-direct pricing and arrange samples if you need them.
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