the chain for world champion!

What makes a RK chain so spezial? Tradition, know-how and experience. For more than 50 years, RK Takasago  is producing chains for motorcycles. Therefore trust the manufacturer as HONDA, SUZUKI, YAMAHA, KAWASAKI, KTM, DUCATI, TRIUMPH, and MV AGUSTA in the original equipment on chains of RK. While other manufacturers initially came from the industrial area for chain belts or escalators, finding a niche in the motorcycle market, RK always worked, researched and developed on the specific requirements of a motorcycle chain. The large and rapid load changes, as they only occur on a motorcycle, the major climatic differences around the world, as well as the correct choice of material to avoid loss of horsepower. Thus, for example in racing chain, designed specifically for a particular circuit, for one driver, on the length of the race distance developed. These chains are so gentle emaciated that they hold exactly one race, and then are used up.

Supporting drivers in GP1 road racing means for RK, to collect thru Telemetry all specific driving data, especially in front and behind the measured curves, and taking account of the round numbers, to choose the optimized chain, for the corresponding driver profile, on the specific circuit.

That is why they live their slogan:

Being The Best Is A Commitment!

RK O-Ring Chains

(420SO, 428SO, 520O, 525SO, 530SOZ1, 630SO)

RK offers the best O-Ring chains in the industry. All RK-O-Ring Chains are constructed of hi-carbon alloy steel for strength and durability. RK utilizes Nitrile Butadiene O-Rings to seal the lubrication and deliver smooth power with no O-Ring drag or loss of horsepower.

GB520XSO, GB525XSO, & GB530XSOZ1

(and non-gold XSO)

Sealed RX-Ring Sportbike Chains

 SKE CHAINS
Looking for an affordable, long lasting performance chain? Look no further, RK's XSO chains offer less torsional friction and increased high-stress, high-speed performance providing a longer lasting chain at an affordable price.
All RX-Ring chains have "Refined X" shaped seals and improved metallurgy giving you 7 times longer wearlife than standard O-ring chains. Viewed in cross section, the RX-ring has two lubrication pools and contact lips versus the single contact design of a standard O-ring chain. Giving the chain a longer life gives you more value for your money.

GB428GXW, GB520GXW, GB525GXW, & GB530GXW

(and non-gold GXW)

Sealed XW-Ring Roadracing & Superbike Chains

RK's GXW series chains are the top of the line extreme performance chains.
XW-ring chains are the best high-speed, extreme heat performance chains available today. The leading edge XW-ring seal is made of an advanced Nitrite Butadiene composite and features three contact lips and two convex inner/outer stabilizers.
This means three lubrication pools to protect against high-speed abrasion, heat build up, torsional flex and the loss of lubricant under these extreme conditions. As a result GXW chains provide the user with 10 times longer wearlife compared to standard chains, GXW chain seals are compression and distortion resistant to provide the ultimate in rotating efficiency.

GB520MXZ4

(and non-gold 520MXZ4)

Heavy Duty Motocross

MXZ4 is The Lightest Motocross Chain available on the market today. Made for the professional motocross racer, GB520MXZ4 is the next generation of motocross racing chains featuring RK's new deeper gold sideplates.
MXZ4 chains feature chromoly steel construction with seamless rollers and bushings, and oversized special alloy pins for added strength.
All components are heat treated using RK's exclusive HIT (Heat Induction Transfer) process, MXZ3 has a maximum tensile strength rated at 39.1 kN, weighs a mere 1.36Kg for 100 links, and can handle any MX race application from 125~500cc.

GB420MXZ & GB428MXZ

(and non-gold MXZ)

These lightweight gold racing chains were developed using the same advanced alloy materials and manufacturing technology as 520MXZ4.
Both 420 and 428MXZ racing chains are the lightest and strongest in their class, giving you the best value-performance rating of any motocross racing chain in the world today.

GB520EXW

(and non-gold 520EXW)

GB520EXW is specifically designed for ATV/Quads and Off-Road vehicles and is the best high-speed, extreme heat, off-road performance chain available today. 

EXW chains were developed to survive the abrasive conditions that exist in hostile off-road environments.
EXW features XW-ring seals composed of Nitrite Butadiene with three contact lips and two convex inner/outer stabilizers.
This means three lubrication pools to protect against high-speed abrasion, and the loss of lubricant under these extreme conditions.