Motorcycle & Tricycle Chain Breaker Tool – for 420 / 428 / 530 Single-Row Roller Chains, Replaceable Hardened Pin

Key points

• Chain coverage: listed for #420, #428 and #530 single-row roller chains. Pitch: 420/428 = 12.7mm, 530 = 15.875mm; roller OD approx. 420 7.7mm, 428 7.85mm, 530 9.5mm — select the correct push pin per chain.
• Controlled screw drive: rotating feed screw pushes the chain pin out steadily; safer than hammering, suitable for workshop and roadside use.
• Replaceable heat-treated pin: hardened push pin reduces wear; supply spare pins by diameter for different chain sizes (exact diameters confirmed per sample).
• Slot positioning: chain sits in an adjustable/notched seat and is locked before pressing, keeping the punch centered on the pin head and reducing side-plate damage.
• For single-row drive chains: motorcycles, tricycles, pit bikes, ATVs, go-karts and small power equipment within the stated chain sizes. Not a default tool for timing chains, multi-row or non-roller chains.
• B2B from Huizhou: neutral box/polybag, OEM logo, spare-pin kits and mixed chain-size sets available.

Instructions

1. Identify chain size from marking or measure pitch.
2. Fit the correct push pin, place the link in the slot, align punch with pin head.
3. Lock the locator, turn the feed screw slowly until the pin head exits one side plate.
4. For thick 530 plates, lightly dress the rivet head before pressing to reduce pin load.
5. Rejoin with the correct master link/rivet set specified by the chain manufacturer.
6.