There are many chain manufacturers in the motorcycle industry but most (including some Japanese manufacturers) only offer a single type of sealing ring, using a "one type fits all approach" which is used on all their drive chains.

This can be inefficient depending on the intended use. .

Different types of seals for different applications maximises efficiency and performance

RK currently has FIVE types of sealed-ring chains. Each has its own features and benefits.

• O ring and RX Rings came first. Each a great product in their own right and broadly similar to the competition's current offerings.
• After several years of development, RK added the XW range of sealed chains to radically improve chain life and performance.
• As racing expanded into several different genres, RK also added the ultra thin U-Ring and UW-Ring sealed chains.
• Each seal type is specifically designed for a particular use to provide the ultimate in rotating efficiency with minimum friction, while providing a longer chain life.
• Do not compromise: Maximise the motorcycle's performance by fitting RK chain. Mark Marquez does and he does pretty well...

Affordable, long lasting performance RX sealed chain. The XSO series offers less torsional friction and increased performance.

XSO chains provide up to 7 times longer wearlife compared to standard chains.

Fitment Summary
Compatible with 245 models (yearly).

• Aprilia: Mana 850GT, Mana 850NA, RSV4 1000RF, RSV4 1000RR
• Benelli: Imperiale 400, Royal 400
• Honda: CB400 SF, CB600 F1, CB600 F2, CB600 F3, CB600 F4, CB600 F5, CB600 F6, CB600 FW, CB600 FX, CB600 FY, CBF600 SF, VFR800 F, VFR800 FE, VFR800 FF, VFR800 FG, VFR800 FH, VFR800 X, VFR800 X Crossrunner
• Kawasaki: Z 1000B7F, Z 1000B8F, Z 1000B9F, Z 1000C7F, Z 1000C8F, Z 1000C9F, ZX10R 1000C1, ZX10R 1000C2, ZX10R 1000E8F, ZX10R 1000E9F, ZX10R 1000FAF, ZX7R 750P1, ZX7R 750P2, ZX7R 750P3, ZX7R 750P4, ZX7R 750P5, ZX7R 750P6, ZX7R 750P7, ZX7R 750P8, ZX7RR 750N1, ZX7RR 750N2, ZX7RR 750N3, ZX7RR 750N4, ZX7RR 750N5, ZX7RR 750N6, ZX7RR 750N7, ZX7RR 750N8, ZX9R 900F1, ZX9R 900F2, ZX9R 900F3
• KTM: Super Duke 990R
• MV Agusta: Brutale 910R, Brutale 910S, F4 1078RR, F4R 1000 F312
• Suzuki: DR 650SE, GSX 400X, GSXR 600K1, GSXR 600K2, GSXR 600K3, GSXR 600K4, GSXR 600K5, GSXR 750K1, GSXR 750K2, GSXR 750K3, GSXR 750K4, GSXR 750K5, GSXR 750WW, GSXR 750WX, GSXR 750Y, SV 650S, SV 650SA, SV 650 Scrambler, SV 650X, XF 650 Freewind
• Yamaha: MT09 900ABS, MT09 900 No ABS, MT09 900SP, MT09 900 Sport Tracker, MT09 900 Street Rally, MT09 900 Tracer GT, MT09A 900 Tracer ABS, TRX 850, XSR 900ABS, XSR 900 Non ABS