Product Overview
The Motorcycle Shift Drum is a core control component in motorcycle transmission systems.
It drives the movement of the shift forks through cam groove profiles, enabling precise gear selection.
The machining accuracy, wear resistance, and stability of the shift drum directly affect shifting smoothness, transmission efficiency, and overall riding performance.
With over 40 years of precision casting and machining expertise, Sangroove (Jiangsu) Machinery Co., Ltd. manufactures high-quality shift drums, shift forks, transmission housings, and power transmission components for global OEM motorcycle manufacturers and aftermarket customers.
Manufacturing Process
- Design Optimization & Tooling Development
- Lost Foam Casting
- Shell Mold Casting
- Resin Sand Casting
- Green Sand Casting
- Induction Furnace Melting & Composition Control
- CNC Turning Machining
- CNC Milling Machining
- Heat Treatment (Quenching & Tempering, Carburizing)
- Precision Groove Machining
- Surface Hardening Treatment
- Full Dimensional Inspection & Performance Testing
Technical Specifications
| Product Name | Motorcycle Shift Drum |
| Materials | QT500-7 / QT600-3 Ductile Iron, Alloy Steel |
| Optional Materials | 20CrMnTi, 40Cr, 42CrMo |
| Casting Process | Shell Mold Casting / Precision Machining |
| Weight Range | 0.3–5 kg |
| Heat Treatment | Quenching & Tempering, Carburizing & Quenching |
| Surface Hardness | HRC 28–60 (Customizable) |
| Machining Accuracy | ±0.01 mm |
| Applications | Manual Motorcycle Transmissions, ATV, UTV |
Product Advantages
- High-Precision Cam Groove Design for Accurate Shifting
- Excellent Wear Resistance through Heat Treatment
- High Fatigue Strength for Continuous Load Operation
- Smooth Shifting Performance with Reduced Gear Resistance
- Stable Mass Production Consistency for OEM Supply
Customer Benefits
- Improved shifting efficiency and riding control
- Extended transmission system service life
- Reduced maintenance and failure costs
- Enhanced vehicle performance and brand competitiveness
Why Choose Sangroove
40+ Years of Precision Manufacturing Experience
One-Stop Manufacturing from Tooling to Final Machining
Certified to IATF 16949, ISO 9001, ISO 14001, ISO 45001, ISO 10012, ISO 50001
Advanced Inspection Equipment including OBLF Spectrometer, ZEISS Microscope, CMM, Hardness and Mechanical Testing Equipment
Global OEM supply experience across motorcycle and power transmission industries
Applications
- Motorcycle Transmission Systems
- Off-road Motorcycles
- Street & Sport Bikes
- ATV Vehicles
- UTV Vehicles
- Motorcycle Engine Transmission Systems