Brembo Radial M4 Monoblock Brake Caliper Kit Black 108mm 220A39750
02 · Data & docs

The facts.

Technical data
Part Number220A39750
Caliper TypeMonoblock, cast
Piston Count4 x 34 mm
Radial Mount Spacing108 mm
Offset30 mm
Friction Ring Diameter35 mm
Maximum Disc Thickness6 mm (optimal 5.5 mm)
Brake Fluid CompatibilityDOT 4 and DOT 5.1
Piston SealingDual-lip seal
FinishBlack
DescriptionThe whole story▼

Machined from a single billet and finished in a deep gloss black, the Brembo Radial M4 Monoblock Brake Caliper Kit represents the pinnacle of road-legal braking hardware. The monoblock body eliminates the flex inherent in two-piece caliper designs, channelling every gram of hydraulic force directly into the pads with a rigidity that transforms the feel and confidence of the front end. Road-approved with a KBA approval number and supplied complete with high-performance sintered brake pads (07BB3793), this is a genuine factory-grade upgrade for serious supersport riders.

Key Features

  • Monoblock cast aluminium body: the one-piece construction maximises caliper stiffness, delivering sharper initial bite and more linear modulation than conventional two-piece units.
  • Radial mounting at 108 mm spacing for direct fitment to a wide range of supersport machines without custom brackets.
  • Four 34 mm pistons with dual-lip sealing, optimised for road use where consistent performance across a broad temperature range is essential.
  • Road-legal KBA approval number included, simplifying registration and TÜV inspections across European markets.
  • Compatible with DOT 4 and DOT 5.1 brake fluid — no hydraulic system overhaul required.
  • Supplied with high-performance sintered brake pads 07BB3793 for immediate fitment and trackday-capable stopping power from day one.

Build Quality and Materials

Brembo's M4 Monoblock stands apart through the discipline of its manufacture. The caliper body is cast as a single piece from high-grade aluminium alloy, then precisely machined to accept the four 34 mm pistons in their paired bores. Every surface that matters — bore finish, seal grooves, fluid galleries — is held to tolerances that explain why Brembo equips MotoGP, World Superbike and Formula 1 machinery. The black finish is not paint; it is a durable protective coating applied over the machined aluminium that resists track-grade heat cycles and road grime with equal composure. The result is a caliper that looks as composed after ten thousand miles as it did in the box.

Performance on Road and Track

The geometry of the M4 Monoblock is engineered around a 30 mm offset and a 35 mm friction ring, sized to work with standard original-equipment brake discs. Maximum disc thickness is 6 mm, with the optimal running thickness at 5.5 mm — figures worth noting when specifying replacement discs. On the road, the four-piston layout distributes clamping load evenly across the pad face, reducing hot-spot fade and improving heat dissipation under sustained braking. For occasional trackdays the dual-sealing piston design and DOT 5.1 compatibility provide an additional safety margin under elevated operating temperatures.

Compatible Spare Parts and Accessories

  • Pad retaining spring plate: part number 120225579
  • Bleed nipple: part number 05338752
  • Bleed nipple dust cap: part number 05150220

Fitment and Compatibility

The Brembo M4 Monoblock Kit with 108 mm radial mount is compatible with a broad range of supersport and open-class motorcycles. Confirmed fitment includes:

  • Honda CBR 600 RR, CBR 1000 RR, CBR 1000 RR-R
  • Kawasaki ZX-6R, ZX-10R, ZX-10RR
  • Suzuki GSX-R 600, GSX-R 750, GSX-R 1000
  • Yamaha R6, R1, R1M
  • Ducati 848, 899, 959, 1199, 1199 S, 1199 R, 1299, 1299 S
  • Aprilia RSV4, RSV4 R, RSV4 RR, RSV4 RF, RSV4 1100, RSV4 1100 Factory, RS 660, RS 457
  • BMW S1000RR, HP4, HP4R, M1000RR
  • Triumph Daytona 675, Daytona 675 R, Daytona 765, Street Triple 765 R, Street Triple 765 RS
  • MV Agusta F3, F4
  • KTM RC 390, RC8 1190

Always verify against your specific model year and existing brake disc dimensions before ordering. If in doubt, contact our technical team for confirmation.

Specifications

Specification Detail
Part Number 220A39750
Caliper Type Monoblock, cast
Piston Count 4 x 34 mm
Radial Mount Spacing 108 mm
Offset 30 mm
Friction Ring Diameter 35 mm
Maximum Disc Thickness 6 mm (optimal 5.5 mm)
Brake Fluid Compatibility DOT 4 and DOT 5.1
Piston Sealing Dual-lip seal
Finish Black
Road Approval KBA approval number
Included Brake Pads 07BB3793 (sintered, high-performance)
What's includedEverything in the box▼
  • 1x Brembo M4 Black brake caliper kit
  • 1x set of high-performance sintered brake pads (07BB3793)
FitmentWhich bikes this fits▼
07 · Support

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