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 268 models (yearly).

• Aprilia: RST 1000 Futura, RSV 1000 Mille ME, RSV 1000 Mille R, RSV 1000 Mille R ME, RSV 1000 Mille SP, RSV 1000 R Factory, RSV 1000 Tuono, RSV 1000 Tuono R, RSV 1000 Tuono R Factory, RSV 1000 Tuono RR, RSV4 1000R, RSV4R 1000 Tuono, Shiver 900SL, SL 1000 Falco PA, SL 750 Shiver
• Cagiva: VRaptor 650, VRaptor 650 Serie I
• Ducati: Hypermotard 821, Hypermotard 821SP, Multistrada 1200 D Air 525 chn. conv., Multistrada 1200 GT 525 chn. conv., Multistrada 1200 Pikes Peak 525 chn. conv., Multistrada 1200 S 525 chn. conv., Multistrada 1200 Tour 525 chn. conv.
• Honda: CB500 F, CBR400 F, CBR400 RRJ, CBR600 F2, CBR600 F3, CBR600 F4, CBR600 F5, CBR600 F6, CBR600 F7, CBR600 FV, CBR600 FW, CBR600 FX, CBR600 FY, CBR919 RRT, CBR919 RRV, GB400 TT, GB500 TT, RVF400 RR, RVF750 RR, RVF750 RS, RVF750 RT, RVF750 RV, RVF750 RW, RVF750 RX
• Kawasaki: ZR7 750F1, ZR7 750F2, ZR7 750F3, ZR7 750F4, ZR7 750F5, ZR7S 750H1, ZR7S 750H2, ZR7S 750H3, ZR7S 750J1, ZR7S 750J2, ZR7S 750J3, ZX10R 1000D6F, ZX10R 1000D7F, ZX6R 600F1, ZX6R 600F2, ZX6R 600F3, ZX6R 600G1, ZX6R 600G2, ZX6R 600J1, ZX6R 600J2, ZX6R 600J3, ZX6R 636A1P, ZX6R 636B1, ZX6R 636B2, ZX6R 636C, ZX7RR 750N1, ZX7RR 750N2, ZX7RR 750N3, ZX7RR 750N4, ZX7RR 750N5, ZX7RR 750N6, ZX7RR 750N7, ZX7RR 750N8, ZZR 600E12, ZZR 600E13, ZZR 600E14, ZZR 600E15
• MV Agusta: F4C 1000 Claudio Castilioni, F4R 1000 Tamburini, F4RR 1000 F312
• Suzuki: GSXR 400 RL RFL, GSXR 400RM, GSXR 400RN, GSXR 400RR, GSXR 600V, GSXR 600W, GSXR 600X, GSXR 600Y, SV 650S, SV 650SA, SV 650X
• Triumph: Daytona 600, Daytona 650, Speed Four 600 T801
• Yamaha: MT07 700 MotoCage, MT07 700 MTN690A, XSR 700 MTM 690