ZCOO B001 EX front brake pads for the Aprilia RS4 125, part Z-B001-EX
02 · Data & docs

The facts.

Technical data
Part numberZ-B001-EX (EAN 4950545750013)
Pad codeZRM-B001C
CompoundZCOO EX Race - ceramic-sintered
Pad dimensions69.7 x 51.15 x 8.5 mm (L x H x thickness)
Caliper familyBrembo
PositionFront axle only
FitmentAprilia RS4 125, 2011-2019
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

On an RS4 125 used on track, the pad is usually the first thing to be found out. The B001 is ZCOO's shape for the Brembo caliper of the Aprilia RS4 125, 69.7 mm long and 8.5 mm thick. For the Aprilia RS4 125 that means EX Race: race-level heat resistance without race-level disc wear.

Key Features

  • The ceramic layer is sintered to the plate rather than pressed against it, which is what keeps the B001 together at the top of its temperature range
  • Even pressure distribution across the 69.7 by 51.15 mm face from new to the wear limit
  • Fade-free past 600 degrees Celsius, the range a hard-worked RS4 125 front end reaches
  • The B001 is made by Okada Corporation in Japan, the manufacturer behind ZCOO's endurance-racing programme
  • Ceramic-sintered EX Race compound: on the RS4 125 the braking force rises in proportion to lever pressure instead of snapping in
  • ZCOO lists the B001 for this machine alone - no other model in the 2026 catalogue uses the shape

Construction and Material Quality

The B001 is made by Okada Corporation in Japan. The ceramic content is what lets the B001 form a protective film on an RS4 125 disc instead of abrading it. On the RS4 125 that translates into a lever position which does not creep as the pad thins.

Performance and Feel

On an RS4 125 the second half of a session is where EX Race earns its price. It works from cold without a warm-up lap and does not turn grabby once the B001 is hot. The Aprilia RS4 125 does not need more force; it needs the same force every time.

Fitment and Compatibility

This reference is catalogued for the Brembo-equipped Aprilia RS4 125, 2011 to 2019. No other machine in the ZCOO 2026 catalogue uses the B001 shape. Before ordering, check that your caliper takes a pad of 69.7 mm length and 51.15 mm height. Front axle exclusively - there is no rear B001.

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-B001-EX (EAN 4950545750013)
  • Pad code: ZRM-B001C
  • Compound: ZCOO EX Race - ceramic-sintered
  • Pad dimensions: 69.7 x 51.15 x 8.5 mm (L x H x thickness)
  • Caliper family: Brembo
  • Position: Front axle only
  • Fitment: Aprilia RS4 125, 2011-2019
  • 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 B001 EX brake pads for one caliper
FitmentWhich bikes this fits
  • Aprilia RS4 125 (2011–2019)
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