Draper Expert Motorcycle Chain Splitter and Riveter Kit

The Draper Expert CBRK3 Motorcycle Chain Splitter and Riveter Kit is a comprehensive, professional-grade chain tool set designed to handle the full spectrum of motorcycle chain splitting and riveting tasks — from the finest No.25 cam chains through to heavy-duty No.520 final drive chains. Supplied in a purpose-made blow mould storage case that keeps every component organised, protected, and ready for use, the CBRK3 is an essential addition to any serious motorcycle workshop or well-equipped home garage.

Whether you are carrying out an engine rebuild that requires cam chain replacement, servicing a small-displacement bike with a lightweight drive chain, or fitting a new final drive chain to a full-sized road or off-road motorcycle, the CBRK3 gives you the precision tooling needed to split and rivet chains cleanly, correctly, and safely — without resorting to improvised methods that risk damaging chain components or producing a sub-standard rivet join that could fail under load.

Exceptional Chain Compatibility

One of the standout qualities of the CBRK3 is its remarkable range of chain compatibility. The kit covers:

• No.25 cam chains — the fine pitch chains used in engine timing systems
• No.35 chains — commonly found on small engines and mini bikes
• No.40 / 41 chains — used on smaller motorcycles and mopeds
• No.420 chains — typical on trail bikes, pit bikes, and smaller off-road machines
• No.428 chains — widely used on 125cc and entry-level motorcycles
• No.520 chains — the heavy-duty final drive standard for mid-range and performance motorcycles

This breadth of compatibility makes the CBRK3 a genuinely versatile tool that earns its place in any workshop dealing with a variety of machines, rather than a single-purpose tool limited to one chain size.

Important Note for 520 Drive Chains: When splitting heavy-duty No.520 final drive chains, the rivet head must be ground off before the press pin can successfully push the rivet through. This is standard practice for masterlink-less chain joins and is clearly noted in the product instructions — ensuring the job is carried out correctly and the press components are not subjected to unnecessary stress.

Precision Engineering for Clean Results

The heart of the CBRK3 is its main press body combined with a clamp and pressure screw handle and sliding T-bar, which together provide the mechanical advantage and control needed to press chain pins smoothly and accurately. Three press pins — in 2.2mm, 2.9mm, and 3.8mm — cover the pin diameter requirements of the full chain size range, while dedicated upper and lower guides for the 2.2mm press pin ensure precise alignment when working on the finest cam chains where accuracy is particularly critical.

The rivet tip spreader is the component that completes the chain joining process, peening the rivet head to lock the masterlink side plate securely in position — a step that is absolutely critical to the integrity and safety of the finished chain join. The included spring for press pins maintains component organisation and aids smooth operation of the tool.

What's Included:

The CBRK3 is supplied as a complete kit, with every component needed to split and rivet motorcycle chains across the full supported size range:

• 1 x Main press body
• 1 x Clamp and pressure screw handle
• 1 x Sliding T-bar
• 2 x Press plates
• 2 x Press anvils
• 3 x Press pins: 2.2mm, 2.9mm, and 3.8mm
• 1 x Rivet tip spreader
• 1 x Upper and lower guides for 2.2mm press pin
• 1 x Spring for press pins
• 1 x Blow mould storage case

The blow mould case is not just a convenience — it is an important part of the kit's value. Small precision components like press pins and anvils are easily lost if stored loosely in a toolbox drawer. The fitted case keeps everything in its designated location, so when you need the tool, every component is exactly where it should be.

Draper Expert Quality

As part of the Draper Expert range — Draper's premium professional tool line — the CBRK3 is manufactured to higher tolerances and with superior materials compared to standard-grade chain tools. For a task where precision directly affects safety, choosing an Expert-grade tool is the right decision. Chain joins that are poorly executed — with misaligned pins, insufficiently peened rivets, or damaged side plates — represent a genuine safety risk, particularly on final drive chains operating under significant load at speed.

Key Features:

• Splits and rivets chains from No.25 cam chain to No.520 final drive chain
• Draper Expert professional grade quality and precision
• Three press pins cover the full chain pin diameter range: 2.2mm, 2.9mm, 3.8mm
• Dedicated guides ensure accurate alignment for 2.2mm fine cam chain work
• Rivet tip spreader for safe and secure chain joining
• Supplied in fitted blow mould storage case — all components organised and protected
• Note: rivet head must be ground off before splitting heavy-duty 520 chains
• Product Code: CBRK3
• Brand: Draper Expert

Suitable For: Motorcycle chain splitting and replacement, cam chain servicing, final drive chain fitting, chain riveting and joining across No.25, No.35, No.40, No.41, No.420, No.428, and No.520 chain sizes. Ideal for professional motorcycle workshops, dealerships, race preparation teams, and experienced home mechanics.