RK Chain Chain Shortener

RK Chain: Precision Engineering for Chain Shortening

When it comes to servicing a motorcycle drive chain, getting the length exactly right is critical — and no brand understands chain mechanics more deeply than RK Chain. Having been producing motorcycle chains since 1953, RK has been at the forefront of motorcycle drive chain technology, and that same commitment to precision manufacturing is fully reflected in their chain shortener tooling lineup.

A Legacy Built on Chain Expertise

Japanese-based RK Chain was started in 1932 under the name "The Shiga Factory of Takasago Tekko K.K.", and during the 1940s and 1950s, the company manufactured various components for a wide variety of vehicles, ranging from bicycles to airplanes. Today, RK's quality, innovation, and consistency has enabled them to work with major partners such as Honda, Suzuki, Yamaha, Kawasaki, and Triumph over many years. That OEM-level engineering doesn't stop at the chain itself — it extends to every tool RK designs for chain installation and servicing.

The UCT2100 Chain Shortener & Multi-Function Tool

RK's flagship chain shortening solution is the UCT2100, a professional-grade chain cutter, press-fit, and riveting tool built to handle the full spectrum of chain service tasks. The RK Chain Cutter and Press Fit Tool delivers a high-caliber solution for the precise and efficient servicing of motorcycle chains.

Designed for both shop and garage use, it effortlessly breaks 40 and 50 series chains and securely sets side plates to the correct depth, making it an ideal choice for installing clip and rivet-type master links. For riders working with O-ring and sealed-ring chains, it easily press-fits tight tolerance 40, 50, and 60 O-ring chain sideplates to the correct depth for clip or rivet link installation.

Thoughtfully Engineered Details

What sets the RK chain shortener apart from generic alternatives is its attention to detail throughout the design. Its newly designed body provides a secure hold on components, while the operation is made smoother by the larger pressure bolt and comfortable handle. Key enhancements, like the reversible plate holder and an upgraded rivet flare pin with a guard, prevent over-riveting for consistent quality in every job.

SKH9 tool steel grade cutting pins work on most brands of chains, making this a truly universal workshop tool — not just limited to RK brand chains. Updated with laser etched parts for easy identification and replacement, the UCT2100 is built with long-term serviceability in mind.

Built to Last, Backed by Warranty

The UCT2100 comes with a limited lifetime warranty on material and craftsmanship of the tool body. Durable and built to last, it also offers replaceable parts for long-term serviceability — a key advantage over cheaper, disposable chain tools that end up costing more in the long run.

Whether you're a professional mechanic fitting chains daily or a weekend rider sizing up a new drive chain in the garage, RK's chain shortener tools bring OEM-quality confidence to every job. Explore the full RK Chain brand lineup for chains, sprocket kits, and accessories trusted from the racetrack to the street.