CHOHO Motorcycle Chain Zenming systems, O/X/Star-Ring chains, DDC sprockets & E-Bike chains

Supply motorcycle drive chains, Zenming 40Cr chain-and-sprocket kits, Thailand DDC sprockets and E-Bike chains manufactured by the CHOHO Motorcycle Chain Division (Qingdao Choho Industrial Co., Ltd.): CL08CFM-5/CL10CFM-5 Zenming systems, 50CrV4 seamless roller chains, O-Ring and X-Ring series, heavy Star-Ring chains up to 1300 cc (42 kN), 6 structural sprocket types and mid-drive E-Bike chains (10S, 11S, Z12DS).

CHOHO Zenming Sealed Chain Systems (CL08CFM-5, CL09CFM-5, CL10CFM-5)

Developed under Chief Engineer Fu Zhenming using GB/T 3077 40Cr alloy steel, the flagship Zenming sealed chain system delivers high fatigue strength and synchronized meshing with matched sprockets.

Model CL08CFM-5 sealed chain: 12.7 mm pitch, 22.5 kN minimum tensile strength for street and commuter motorcycles
Model CL09CFM-5 sealed chain: 14.29 mm pitch, 30.5 kN minimum tensile strength for mid-displacement motorcycles
Model CL10CFM-5 heavy sealed chain: 15.875 mm pitch, 42.0 kN tensile strength for large-bore multi-cylinder motorcycles
Available as individual chains or complete factory-matched Zenming kits with 40Cr alloy-steel front and rear sprockets

CHOHO Zenming Off-Road Racing Chains (CL08CFS-5, CL09CFS-5) & 40Cr Sprockets

Lightweight unsealed Zenming racing chains and precision-machined 40Cr alloy-steel sprockets engineered for motocross, enduro and track racing under high shock loads.

Model CL08CFS-5 off-road chain: 12.7 mm pitch, 22.5 kN tensile strength with low-friction unsealed racing architecture
Model CL09CFS-5 off-road chain: 14.29 mm pitch, 30.5 kN tensile strength with mud-clearing inner plate cutouts
Zenming sprockets manufactured from GB/T 3077 40Cr alloy steel with induction-hardened tooth profiles
Reduced meshing impact noise and uniform load distribution across the sprocket arc to prevent premature pitch elongation

CHOHO 50CrV4 Seamless Roller & Off-Road Chains (428HS, 428HDS, 520HDS, 530HS, 420D, 520ND)

Heavy-duty unsealed roller chains featuring 50CrV4 spring-steel link plates and cold-extruded seamless bushings for superior impact resistance on street and motocross bikes.

Heavy-duty street roller chains: 428HS (20.6 kN, 110–150 cc) and thick-plate 428HDS (20.6 kN, 110–190 cc)
Mid- and large-pitch roller chains: 520HDS (30.5 kN tensile strength) and 530HS (30.5 kN tensile strength)
Dedicated motocross off-road chains: 420D (21.0 kN, up to 150 cc) and 520ND (33.0 kN, 200–500 cc dirt bikes)
Cold-extruded seamless bushings eliminate seam splitting under clutch dumps and jump landings, extending wear life

CHOHO O-Ring (HO) & X-Ring Sealed Motorcycle Chains (428HX, 520O2, 520X, 520HX)

Sealed street, touring and dual-sport motorcycle chains that lock factory grease inside the pin-bushing interface using O-Ring and four-lip X-Ring elastomer seals.

O-Ring HO series (125–250 cc commuter motorcycles) and 520O2 sealed chain (30.5 kN minimum tensile strength)
Model 428HX X-Ring chain: 12.7 mm pitch, 21.0 kN tensile strength engineered for motorcycles up to 250 cc
Models 520X (26.5 kN) and heavy-duty 520HX (15.875 mm pitch, 33.0 kN tensile strength) for motorcycles up to 450 cc
Four-lip X-Ring geometry reduces seal friction by up to 40% compared to standard O-Rings while blocking mud and grit

CHOHO Star-Ring Heavy Motorcycle Chains for 200–1300 cc (520X2, 520UX/525UX, 520SX2/525SX2, 525VZ, 520EX/525EX)

Ultra-high-strength chains engineered for 200–1300 cc motorcycles, featuring CHOHO's proprietary multi-lobe Star-Ring seal with internal lubrication pockets and chromized pins.

Mid-to-heavy Star-Ring series: 520X2 (34 kN, 200–400 cc) and 520UX / 525UX (34 kN, for 300–650 cc motorcycles)
Sport-touring & adventure series 520SX2 / 525SX2: 38.0 kN minimum tensile strength for 650–1100 cc engines
Superbike & hyperbike series: 525VZ (42.0 kN, 1000–1300 cc) and flagship 520EX / 525EX (42.0 kN, 700–1300 cc)
Surface-chromized pins (CrC), gold/black anti-corrosion outer plates and hollow-nose rivet master links (ZJ)

CHOHO & Thailand DDC Motorcycle Sprockets (6 Structural Designs)

Comprehensive front and rear motorcycle sprocket range jointly manufactured by CHOHO (Qingdao) and its 55%-owned Thai subsidiary DDC Sprocket Co., Ltd.

CNC Aluminium sprockets (7075-T6) and Ladle aluminium bi-metal sprockets (lightweight aluminium carrier with steel outer teeth)
Induction-hardened Steel sprockets and rubber-cushioned Silent sprockets for OEM street noise reduction
Single-rocker sprockets for single-sided swingarms and quick-change Split sprockets for racing pit stops
Available across 420, 428, 520, 525 and 530 pitches by OEM/DDC part number or custom hub bolt pattern drawing

CHOHO Motorcycle Chain Maintenance Tools & Care Products (Chain Cutter, Cleaner & Oil)

Workshop-grade chain service tools and elastomer-safe maintenance chemicals designed by CHOHO for proper master-link riveting and seal preservation.

Heavy-duty Chain Cutter & Riveter tool (拆链器) for pressing pins and flaring hollow-nose ZJ master links on 420–530 chains
Seal-safe Chain Cleaner (清洗剂) formulated to dissolve road grime without swelling O-Ring, X-Ring or Star-Ring elastomers
High-adhesion synthetic Chain Oil (链条油) with anti-wear additives and high-speed anti-fling resistance
Ensures accurate sideplate clearance during link installation and protects chains against corrosion and dry wear

CHOHO Mid-Drive E-Bike Chains (10-Speed, 11S, Z12DS) & Multi-Speed Bicycle Chains (1S, 7S, 8S)

Manufactured by CHOHO's Bicycle Chain Department (established in 2021) for high-torque mid-drive electric bicycles, MTB, gravel and urban fleet bicycles.

High-torque E-Bike chains (10-Speed E-Bike, 11S and 12-speed Z12DS) with reinforced pin retention power against motor surge loads
Classic 1-Speed, 7-Speed and 8-Speed bicycle chains for commuter, cargo and bike-sharing fleets
Precision-chamfered inner and outer plates ensure crisp derailleur shifting across 7- to 12-speed cassettes
Durable anti-rust surface treatments engineered for all-weather commercial E-Bike operation

CHOHO Motorcycle Chain Division profile and Thailand DDC Sprocket integration

Operating as the core business unit of Qingdao Choho Industrial Co., Ltd.

(SZSE Stock Code: 003033), the CHOHO Motorcycle Chain Division pioneered Chinese domestic manufacturing of high-strength sealed and racing motorcycle chains for displacements up to 1300 cc under Chief Engineer Fu Zhenming (Deputy Director of China's National Technical Committee on Chain

Transmissions and co-author of over 20 national and industry standards).

In April 2024, CHOHO acquired a 55% controlling stake in Thai sprocket manufacturer DDC Sprocket Co., Ltd., uniting Qingdao chain lines with Thailand sprocket manufacturing to supply complete OEM and aftermarket drivetrain kits across six sprocket constructions, alongside its Bicycle Chain

Department (founded in 2021) for mid-drive E-Bikes.

When requesting a quotation, please specify the chain series (CL08CFM-5, CL09CFM-5, CL10CFM-5, 428HS, 520HDS, 428HX, 520HX, 520UX, 520SX2, 525VZ, 525EX, or Z12DS E-Bike), pitch (420–530), link count and sprocket tooth/hub dimensions.

Zenming Sealed & Off-Road Chain Systems (CFM-5 / CFS-5) with 40Cr Alloy-Steel Sprockets

Developed by Chief Engineer Fu Zhenming using GB/T 3077 40Cr alloy steel, the Zenming Chain System is engineered as a synchronized chain-and-sprocket assembly that minimizes meshing noise and uneven pitch wear.

The Zenming sealed lineup comprises CL08CFM-5 (12.7 mm pitch, 22.5 kN minimum tensile strength), CL09CFM-5 (14.29 mm pitch, 30.5 kN) and heavy-duty CL10CFM-5 (15.875 mm pitch, 42.0 kN).

For motocross and track racing, unsealed CL08CFS-5 (12.7 mm pitch, 22.5 kN) and CL09CFS-5 (14.29 mm pitch, 30.5 kN) chains pair with induction-hardened 40Cr Zenming sprockets.

50CrV4 Seamless Roller Chains, O/X-Ring Series and Star-Ring Heavy Chains up to 1300 cc

Unsealed CHOHO motorcycle chains feature 50CrV4 spring-steel plates and cold-extruded seamless bushings: street models 428HS (20.6 kN, 110–150 cc), 428HDS (20.6 kN, 110–190 cc), 520HDS (30.5 kN), 530HS (30.5 kN) and motocross models 420D (21.0 kN, up to 150 cc) and 520ND (33.0 kN, 200–500 cc).

For street and dual-sport motorcycles up to 450 cc, CHOHO produces O-Ring HO chains (including 520O2 at 30.5 kN) and four-lip X-Ring chains 428HX (12.7 mm pitch, 21.0 kN, up to 250 cc), 520X (26.5 kN) and 520HX (15.875 mm pitch, 33.0 kN, up to 450 cc).

For 200–1300 cc motorcycles, multi-lobe Star-Ring chains provide maximum tensile capacity: 520X2 (34 kN), 520UX/525UX (34 kN, 300–650 cc), 520SX2/525SX2 (38 kN, 650–1100 cc), 525VZ (42 kN, 1000–1300 cc) and 520EX/525EX (42 kN, 700–1300 cc).

Six DDC Sprocket Types, Chain Maintenance Tools & Mid-Drive E-Bike Chains (10S, 11S, Z12DS)

CHOHO and Thailand DDC Sprocket manufacture six sprocket types: 7075-T6 Aluminium sprockets, Ladle aluminium bi-metal sprockets (aluminium carrier with steel teeth), Steel sprockets, rubber-damped Silent sprockets, Single-rocker sprockets and quick-change Split sprockets, supported by professional

Chain Cutters/Riveters, elastomer-safe Chain Cleaner and synthetic Chain Oil.

The Bicycle Chain Department manufactures reinforced mid-drive E-Bike chains (10-Speed E-Bike, 11S, 12-speed Z12DS) with chamfered plates and high pin retention, alongside 1-Speed, 7-Speed and 8-Speed bicycle chains.

Global B2B supply for motorcycle OEMs, drivetrain assemblers and aftermarket distributors

We supply CHOHO motorcycle chains, Zenming kits, DDC sprockets and E-Bike chains in retail boxes, matched chain-and-sprocket sets or workshop reels worldwide.

Send us your chain model, pitch, link count or sprocket drawing to receive a commercial quotation.

Lead times, minimum order quantities and pricing for CHOHO Motorcycle Chain and DDC Sprocket products are calculated individually upon commercial request; public price lists are not published by the manufacturer.

We operate as an independent B2B supplier, not an authorized distributor of Qingdao Choho Industrial Co., Ltd.