ZCOO S001 EX front brake pads for the Yamaha XSR900 GP, part Z-S001-EX
02 · Data & docs

The facts.

Technical data
Part numberZ-S001-EX (EAN 4950545750129)
Pad codeZRM-S001C
CompoundZCOO EX Race - ceramic-sintered
Pad dimensions69.5 x 50.5 x 8.8 mm (L x H x thickness)
Caliper familySumitomo (Yamaha)
PositionFront axle only
FitmentYamaha XSR900 GP, 2016-2026
Contents per pack1 set = 2 pads for one caliper; a machine with twin front discs needs two packs
Road approvalNo ECE R90 type approval documented - track and competition use
ManufacturerOkada Corporation, Japan
DescriptionThe whole story

The XSR900 GP puts the rider high and forward, which is exactly where they do not want a surprise. The S001 is ZCOO's shape for the Sumitomo caliper of the Yamaha XSR900 GP, 69.5 mm long and 8.8 mm thick. What the S001 carries is EX Race: a ceramic sinter tuned for proportionality over attack.

Key Features

  • A pad geometry drawn for this caliper family rather than shared across three of them, which is why the S001 fills its window
  • Fits the Sumitomo caliper the Yamaha XSR900 GP left the factory with - no aftermarket caliper required
  • Forms a thin ceramic film on the rotor in use, so disc wear on the Yamaha XSR900 GP stays far below what a conventional sintered race pad causes
  • Predictable in the wet, because the compound does not need temperature to start working on a XSR900 GP
  • Sized for the braking energy a 890 cc machine generates, not scaled down from a larger reference
  • The S001 is dimensionally stable under the clamping load a Sumitomo caliper generates

Construction and Material Quality

The S001 is made by Okada Corporation in Japan. A Sumitomo caliper spreads under peak line pressure, and a plate that yields with it moves the contact patch onto the pad's edges. It is also why ZCOO can quote fade resistance beyond 600 degrees for the S001 without qualifying it.

Performance and Feel

What the S001 in EX Race buys is predictability, not a headline figure. The lever pressure needed for a given deceleration barely moves as heat builds through a session on the XSR900 GP. Which matters most on an XSR900 GP, where the rider's own weight is part of the braking load.

Fitment and Compatibility

Fitment covers the Yamaha XSR900 GP from 2016 to 2026 with the Sumitomo caliper. Before ordering, check that your caliper takes a pad of 69.5 mm length and 50.5 mm height. The same S001 shape covers 27 further machines in the 2026 catalogue. The reference is a front pad; ZCOO lists no rear equivalent.

Road Approval

No ECE R90 type approval is documented for this pad. It appears neither in ZCOO's own catalogue nor on the European distributor's site, and no approval number is printed on the packaging data available to us. ZCOO itself describes the compound as suited to competition machines and road machines alike, but that is a description of the mixture, not a type approval. Until the distributor confirms an approval in writing, treat this as a track and competition part: in Germany a replacement brake pad without ECE R90 approval may not be fitted to a motorcycle used on public roads. Ask us before ordering if you need this clarified for your machine.

Specifications

  • Part number: Z-S001-EX (EAN 4950545750129)
  • Pad code: ZRM-S001C
  • Compound: ZCOO EX Race - ceramic-sintered
  • Pad dimensions: 69.5 x 50.5 x 8.8 mm (L x H x thickness)
  • Caliper family: Sumitomo (Yamaha)
  • Position: Front axle only
  • Fitment: Yamaha XSR900 GP, 2016-2026
  • Contents per pack: 1 set = 2 pads for one caliper; a machine with twin front discs needs two packs
  • Road approval: No ECE R90 type approval documented - track and competition use
  • Manufacturer: Okada Corporation, Japan
What's includedEverything in the box
  • 1 set = 2 ZCOO S001 EX brake pads for one caliper
FitmentWhich bikes this fits
  • Yamaha XSR900 GP (2016–2026)
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