Heavy-Duty Chain Breaker Tool for #420 #428 #520 #525 #530 Roller Chains

Product Overview

Make chain removal and length adjustment easier with this heavy-duty chain breaker tool, designed for common powersports roller chains from #420 to #530.

Whether you are shortening a new chain, removing a damaged link, or replacing an old drive chain, this tool helps push out chain pins with better control and alignment than basic hand tools. It is suitable for motorcycles, dirt bikes, pit bikes, ATVs, go-karts, mini bikes, and other small powersports vehicles using compatible roller chain sizes.

Built from industrial-grade molybdenum steel, the tool is made to handle the high pressure required for chain pin removal while helping reduce bending, slipping, or misalignment during use. Its compact T-handle design provides steady leverage for garage repairs, routine maintenance, or trail-side chain service.

Product Compatibility

Chain Size	Common Applications
#420	50cc–125cc dirt bikes, pit bikes, mini bikes, small ATVs
#428	110cc–150cc pit bikes, scooters, go-karts, small motorcycles
#520	ATVs, dirt bikes, sport bikes, quads, off-road motorcycles
#525	Medium to large motorcycles, ATVs, performance applications
#528	Select heavy-duty powersports chain setups
#530	Larger street bikes, dune buggies, heavy-duty ATVs

Technical Specifications

Specification	Details
Product Type	Roller Chain Breaker Tool
Compatible Chain Sizes	#420, #428, #520, #525, #528, #530
Thimble / Pin Diameter	4 mm / 0.15 in
Effective Working Length	32 mm / 1.25 in
Overall Size	125 mm x 100 mm / 4.92 in x 3.93 in
Material	Industrial-Grade Molybdenum Steel
Application	Chain pin removal / chain length adjustment
Fitment Type	Universal, based on chain size

Key Features

Heavy-Duty Molybdenum Steel Construction

Made from strong molybdenum steel to help withstand the pressure needed to push out chain pins on common powersports roller chains.

Fits Common #420–#530 Roller Chains

Compatible with many chain sizes used on motorcycles, ATVs, dirt bikes, pit bikes, go-karts, mini bikes, quads, and buggies.

4 mm Precision Thimble

The 4 mm thimble helps align with the chain pin for cleaner removal and reduced risk of damaging the surrounding side plates.

T-Handle Leverage Design

The T-handle design allows controlled, even pressure when driving out chain pins, making chain maintenance easier than using improvised tools.

Compact Garage or Trail Tool

Small enough to keep in a toolbox, garage kit, trailer, or emergency maintenance bag for chain repairs and adjustments.