Shimano K05S-RX Disc Brake Pad and Spring

Shimano K05S-RX Disc Brake Pad and Spring Shimano

Shimano K05S-RX Disc Brake Pad and Spring

Shimano K05S-RX Disc Brake Pad and Spring

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Is the Shimano K05S-RX the Right Pad for Your Disc Brake?

The Shimano K05S-RX is the 5th-generation resin replacement pad for Shimano's current-generation road, gravel, and high-end MTB hydraulic disc calipers, covering Dura-Ace R9270, Ultegra R8170, 105 R7170, GRX RX810 and RX820, XTR M9100, Deore XT M8110, and the full range of RS-series road disc calipers. Built with 5th-generation resin friction material, the K05S-RX delivers 50% better wear resistance than the K03S and 110% better than the K02S, with less noise and improved modulation compared to older resin compounds. The finless design keeps the pad compact and compatible with the tight clearances of current-generation flat-mount road disc calipers.

The narrow type K pad shape uses a stainless steel back plate for rigid, corrosion-resistant pad support in road and gravel conditions where moisture exposure is common. Compatible calipers span the current Shimano road disc ecosystem including BR-R9270, BR-R8170, BR-R7170, BR-R9170, BR-R8070, BR-R7070, BR-4770, BR-RS805, BR-RS505, BR-RS405, BR-RS305, BR-U5000, BR-RX810, BR-RX400, BR-RX820, BR-M9100, BR-M9110, and BR-M8110. Each package includes one pair of pads with spring. The K05S-RX is the OEM resin option for riders running current-generation Shimano hydraulic disc brakes who want quiet, precise feel with meaningfully longer pad life than previous generations.

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  • Estimated delivery: May 24 - May 28

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Specifications

  • Model: BP-K05S-RX
  • Lining Material: Resin (5th generation)
  • Pad Shape: Narrow type, K
  • Piston Compatibility: 2-piston brake caliper
  • Back Plate: Stainless steel
  • Radiator Fin: No
  • Wear Improvement: 50% better than K03S, 110% better than K02S
  • Package: 1 pair with spring
  • Compatible Calipers: BR-M9100, BR-M9110, BR-M8110, BR-R9270, BR-R8170, BR-R7170, BR-R9170-F/R, BR-R8070-F/R, BR-R7070-F/R, BR-4770-F/R, BR-RS805-F/R, BR-RS505-F/R, BR-RS405-F/R, BR-RS305-F/R, BR-U5000, BR-RX810-F/R, BR-RX400-F/R, BR-RX820

FAQ

What is the difference between the K05S-RX and the L05A-RF for current Shimano road disc brakes?

Both pads share the same compatibility range for current Shimano road disc calipers. The K05S-RX has no radiator fin and a stainless back plate, while the L05A-RF includes an alloy radiator fin and alloy back plate. The K05S-RX is more compact; the L05A-RF dissipates more heat on long descents.

Will the K05S-RX fit my Shimano XTR M9100?

Yes. The K05S-RX fits the XTR BR-M9100 and BR-M9110, as well as the Deore XT BR-M8110. These are the current 2-piston XTR and XT caliper models released with the M9100 and M8100 series groupsets.

Does this pad include a spring?

Yes. Each package includes one pair of K05S-RX pads with the retaining spring included.

Best For

Road and gravel cyclists running current-generation Shimano hydraulic disc brakes from Dura-Ace R9270 through GRX RX810, plus XTR M9100 and XT M8110 MTB riders who want OEM resin feel with improved longevity in a compact, finless design.

Shimano K05S-RX Disc Brake Pad and Spring Reviews:

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