Maximum Traction for Your Quad! – Drive Chain 428 / 140 (70 Links)
Heavy-duty roller chain – Reliable drive for 250cc models
Get your power to the axle safely! This 428-size Drive Chain with 70 links (often labeled 428/140 as it consists of 70 double links) is a robust, high-quality product for daily use. Specifically tailored to the requirements of quads like the Haili SP 307-J, Jingling JLA 21B, and Spy Racing 250, it offers high tensile strength and long durability. The precision-manufactured rollers and plates minimize friction and ensure smooth travel on both road and off-road terrain.
Technical Specifications & Details
Pitch: 428 (Standard for many 200-300cc quads)
Length: 70 links (double links) / Equivalent to 140 pins
Material: High-strength steel, pre-treated with anti-corrosion grease
Compatibility:
Haili: SP 307-J (250cc)
Jingling: JLA-21B
Spy Racing: 250cc models
Universal: Many other Chinese quads and ATVs with corresponding sprocket combinations.
Benefit: Includes a connecting link (master link) for easy installation.
Visual Compatibility: Before installation, perform a visual check. Be sure to count the links of your old chain, as the required length may vary depending on the installed front and rear sprockets.
Sprocket Inspection: Check the condition of the teeth. If they are already "pointed" (hooked shape), the entire sprocket set must be replaced, as a new chain on worn sprockets will be destroyed very quickly.
Master Link Installation: When installing the connecting link, ensure that the closed end of the clip faces the direction of travel. This prevents the clip from being knocked off by debris or housing parts.
Chain Tension: Adjust the chain so that it has approximately 20–30 mm of slack when under load (with the rider sitting on the vehicle). A chain that is too tight will damage the output shaft and rear axle bearings.
Maintenance: Regularly clean the chain with chain cleaner and then apply high-quality chain spray to minimize friction and wear
