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 166 models (yearly).

• Aprilia: Dorsoduro 750SMV, ETV 1000 Caponord, ETV 1000 Caponord Raid
• Benelli: Leoncino 500 Brembo 4-Pist radial caliper
• Honda: CB750 F2, CBR600 F1, CBR600 FS1, CBR600 FS2, CBR600 RR3, CBR600 RR4, CBR600 RR5, CBR600 RR6, CBR600 RR7, CBR600 RR8, CBR600 RR9, CBR600 RRA, CBR600 RRB, CBR600 RRD, CBR600 RRF, CBR600 RRG, NT650 J, NT650 K, NT650 L, NT650 M, NTV400 Bros, VT750 S, XLV1000 V, XLV1000 V1, XLV1000 V2, XLV1000 V3, XLV1000 V4, XLV1000 V5, XLV1000 V6, XLV1000 V7, XLV1000 V8, XLV1000 V9, XLV1000 VA, XLV1000 VB, XLV1000 VC, XLV1000 VD
• Kawasaki: KLV 1000A1H, KLV 1000A2H, KLV 1000A3H, Z 1000A1, Z 1000A2, Z 1000A3, Z 1000A6F, Z 1000DAF, Z 1000DBF, Z 1000DCF, Z 1000DDF, Z 1000ECF, Z 1000FEF, Z 1000GEF, Z 1000 GEFA, Z 1000SX, Z 1000 SX abs, ZX10R 1000JBF, ZX10R 1000JCF, ZX10R 1000JDF, ZX10R 1000JEF, ZX10R 1000JFF
• Suzuki: DL 1000 V-Strom WVBS, GSR 750L1, GSR 750L2, GSR 750L3, GSR 750L4, GSR 750L5, GSR 750L6, GSR 750L7, GSR 750L8, GSXR 400H, GSXS 750L5, GSXS 750L6
• Triumph: America 865, America 865LT, Bonneville 800, Bonneville 800 T100, Speedmaster 800, Speedmaster 865 Twin Disc, Thruxton 900