RK Racing Chain 420 Series 110-Link Non O-Ring Motorcycle Chain — Japanese Steel, Two-Point Riveted

The M420-110 is part of RK's RKM family, produced in Malaysia to Japanese engineering standards. It combines durable materials and straightforward construction—no O-rings—to deliver a lightweight, serviceable chain that fits a wide range of small- to mid-displacement motorcycles, minibikes, and go-karts. The connecting link included makes installation and removal practical for home mechanics and track crews alike.

How is this chain constructed and why does that matter?

This chain uses Japanese steel in components made at RK's Malaysian facility, assembled with two-point riveted pins and curled bushings to meet Japanese specifications for strength and tolerance. The standard non O-ring design reduces rotating mass and simplifies maintenance compared with sealed chains.

• Japanese steel plates and pins for consistent hardness and wear resistance
• Two-point riveted pins provide reliable pin retention under load
• Curled bushings increase contact surface for smoother articulation
• Non O-ring profile offers lower friction and easier cleaning

What sizes and compatibility does the M420-110 support?

The M420-110 follows the 420-series pitch and comes with 110 links, suitable for many minibikes, small street bikes, dirt bikes, ATVs, and custom applications that require a 420 pitch chain. It can be shortened by removing links to match specific sprocket setups or used as-is where 110 links are required.

• 420 series pitch—commonly used on smaller-displacement motorcycles and utility machines
• 110 links standard length; links can be removed to achieve desired chain length
• Includes connecting link for straightforward assembly and disassembly
• Compatible with standard 420 sprockets (front and rear)

How should I maintain a non O-ring chain like this?

Non O-ring chains require regular cleaning and lubrication to maximize service life. Because there are no internal seals, contaminants can be removed more easily, but you should lubricate frequently—especially after wet or dusty rides—to protect metal-on-metal contact points.

• Clean with a mild degreaser and soft brush, then dry thoroughly
• Apply appropriate chain lubricant to rollers and bushings after cleaning
• Check chain tension and alignment regularly to prevent accelerated wear
• Inspect pins and bushings for elongation or tight spots; replace if excessive wear is present

Will this chain meet performance needs on track or daily riding?

The M420-110 is designed as a reliable, cost-effective drivetrain component for everyday use and light track duty. Its non O-ring construction helps reduce weight and friction, while RK's riveted pins and curled bushings uphold strength within the 420-series limitations.

• Good balance of durability and low friction for street and recreational riding
• Lightweight profile suitable for responsive acceleration in small machines
• Durable assembly for routine track sessions when maintained properly
• Affordable replacement option for budget-conscious riders and builders

Who is this for: The RK Racing Chain M420-110 is aimed at riders, mechanics, and hobbyists who need a dependable, serviceable 420-series chain—especially owners of small-displacement motorcycles, minibikes, ATVs, and custom projects. If you prefer straightforward maintenance, lower rotating mass, and a chain built to Japanese specifications without the added complexity of O-rings, this chain is a practical choice.