RK GB420MXZ Heavy-Duty MX Chain | 82–134 Links & Master Link

The RK GB420MXZ Heavy-Duty MX Chain is engineered for performance on the track and trail. Built with hardened pins, precision bushings, and reinforced rollers, the MXZ series delivers exceptional durability for mini bikes, pit bikes, and small-displacement motorcycles running a 420-pitch drivetrain.

Available in a full range of link counts — from a standalone Master Link to 134 Links — making it the go-to chain for stock replacements and custom gearing builds alike.

Specifications

• Chain Type: 420 MXZ Heavy-Duty
• Pitch: 420
• Weight: 2.5 lbs
• Available Lengths: Master Link, 82, 100, 104, 110, 114, 118, 120, 124, 126, 130, 132, 134 Links

SKUs by Link Count

• Master Link – SKU: GB420MXZ-CL
• 82 Links – SKU: GB420MXZ-82
• 100 Links – SKU: GB420MXZ-100
• 104 Links – SKU: GB420MXZ-104
• 110 Links – SKU: GB420MXZ-110
• 114 Links – SKU: GB420MXZ-114
• 118 Links – SKU: GB420MXZ-118
• 120 Links – SKU: GB420MXZ-120
• 124 Links – SKU: GB420MXZ-124
• 126 Links – SKU: GB420MXZ-126
• 130 Links – SKU: GB420MXZ-130
• 132 Links – SKU: GB420MXZ-132
• 134 Links – SKU: GB420MXZ-134

Fitment

• Honda Grom (OG, SF, 2022+)
• Honda Monkey (1st Gen, 2022+)
• Honda CRF110 (2013–2018, 2019+)
• Honda Trail 125
• Honda XR50
• Kawasaki KLX110
• Honda CB300R (JC92)
• TNT135 and compatible 420-pitch mini bike platforms

Why RK?

• Industry-leading chain manufacturer trusted by OEM and aftermarket builders worldwide
• MXZ series engineered for high-stress motocross and trail applications
• Precision manufacturing ensures consistent stretch resistance and long service life
• Rated 5/5 stars by verified buyers

Questions? Email us at info@howlingmoto.com