RK GB420MXZ Heavy-Duty MX Chain – 120 to 134 Links | Mini Bike & Pit Bike

The RK GB420MXZ Heavy-Duty MX Chain is built for riders who demand reliability on the track and trail. Featuring high-quality pins, bushings, and rollers, the MXZ series delivers maximum durability for mini bikes, pit bikes, and small-displacement motorcycles.

Available in five link counts to fit a wide range of builds — from stock setups to custom gearing configurations.

Specifications:

• Chain Type: 420 MXZ Heavy-Duty
• Weight: 2.5 lbs per chain
• Available Links: 120, 124, 126, 132, 134

SKUs by Link Count:

• 120 Links – SKU: GB420MXZ-120
• 124 Links – SKU: GB420MXZ-124
• 126 Links – SKU: GB420MXZ-126
• 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
• MXZ series engineered for high-stress motocross and trail applications
• Rated 5/5 stars by verified buyers

Questions? Email us at info@howlingmoto.com