Is this kit worth it over stock calipers?

If your bike already has radial mounts and you ride hard or on track, the stiffer monoblock body and four-piston bite are a real step up. On a street-only bike with axial mounts, the cost and fitting work usually outweigh the gain.

Will it fit my motorcycle?

Only if your forks use radial caliper mounts with the correct 108 mm spacing, and your discs are 310–330 mm with 32–34 mm height. Check the mount spacing and disc spec before buying; many bikes need adapters or different forks.

Do I need a new master cylinder or brake lines?

Often yes. Four 34 mm pistons change fluid volume and lever ratio, so a matching radial master cylinder and braided lines are common. A qualified mechanic should confirm compatibility.

The set includes left and right calipers with pads mounted and mounting hardware. Brake lines, master cylinder and fluid are not included.

Are these suitable for street use?

Brembo lists them for sports driving and high-performance road use, so they work on the street. The bite is strong, so smooth brake control and good tires matter, especially in the wet.

When is the price lowest?

Prices for Brembo race parts move with stock and currency, and sales cluster around pre-season and end-of-year events. Compare across stores and watch the price history rather than buying on impulse.

Brembo Radial Monoblock Caliper Kit M4 34/34 108mm Left/Right Set

Last price we saw

$750.95at Bobleisure, last seen Nov 2

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Our take on the Brembo Radial Monoblock Caliper Kit M4 34/34 108mm Left/Right Set

The Brembo M4 radial monoblock caliper kit is a pair of four-piston front calipers (34 mm pistons) for sport and high-performance road motorcycles, with radial mounting and hard-anodized black aluminum bodies. It fits 310–330 mm discs with 32–34 mm disc height and ships with pads mounted. This is a race-derived upgrade, not a bolt-on for every bike: radial mounts, master cylinder sizing and ABS/line routing need checking by a qualified mechanic.

Best forTrack-day and sport riders wanting stronger, more consistent front brakingOwners of bikes already fitted with radial-mount forks and matching master cylin