Brembo Radial M4 Monoblock Brake Caliper Kit Black 108mm 220A39750

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