Primary CVT Drive Clutch 21300-004-0000
Overview
The 21300-004-0000 is a high-performance CVT primary clutch (drive pulley) designed for medium to large displacement (500cc - 750cc) all-terrain vehicles. It efficiently transmits engine power to the secondary drive system via a belt, and its precise centrifugal mechanism automatically adjusts the gear ratio based on engine speed, ensuring smooth starts and powerful acceleration.
Product Highlights
High-Quality Chinese Manufacturing: Made from high-strength, lightweight aluminum alloy, strictly adhering to OEM factory specifications, offering a cost-effective alternative to original parts.
Dynamic Balancing Design: Each clutch is balanced and calibrated, effectively reducing vibration at high speeds, protecting the engine crankshaft, and extending belt life.
Excellent Heat Dissipation: The unique fin design quickly dissipates heat generated by friction, preventing belt slippage and high-temperature deformation.
Plug and Play: Standard OE interface design allows for direct replacement without modification, ensuring easy installation.
| Item |
Technical Specifications |
| Product Name |
Primary CVT Drive Clutch Assembly |
| OE Part Number | 21300-004-0000 |
| Interchange Part Nos. |
503-01124, 324700007, 213000040000 |
| Material |
High-Strength 6061-T6 Aluminum Alloy |
| Manufacturing Process |
Precision Die-Casting & CNC Machining |
| Outer Diameter (OD) |
Approx. 191mm (7.5 in) |
| Center Bore Diameter |
Approx. 19mm (0.74 in) |
| Cooling Features |
24 Heat Dissipation Fins for superior thermal management |
| Bottom Plate Spline | 18 Teeth design |
| Sheave Plate Spline | 21 Teeth design |
| Compatibility |
500cc, 550cc, 700cc, 750cc UTVs/ATVs |
| Fitment Brands |
HiSun, Massimo, Bennche, Coleman, Cub Cadet, etc. |
| Key Features |
Lightweight, Wear-resistant, Dynamic Balancing, High Heat Dissipation |
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