{"product_id":"brembo-xb9l2a1","title":"Brembo Racing GP4-RR Monoblock Brake Caliper Kit 108mm XB9L2A1","description":"\u003cp\u003eFor riders who demand absolute stopping authority on track, the Brembo GP4-RR Monoblock Brake Caliper Kit represents the pinnacle of racing brake technology. Engineered exclusively for circuit use, this 108mm kit combines a one-piece aluminium body with four titanium pistons and purpose-built thermal management — delivering the progressive, fade-resistant braking feel that separates podium finishes from also-rans. Important: this caliper kit carries no road-use homologation and is intended solely for racing and trackday applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMonoblock aluminium construction — the one-piece body eliminates flex between bolt faces, providing a direct, consistent lever feel under repeated hard braking\u003c\/li\u003e\n\u003cli\u003eFour titanium pistons (2x Ø32 mm, 2x Ø36 mm) — titanium's low thermal conductivity shields the brake fluid from heat soak, preserving pedal firmness deep into a braking zone\u003c\/li\u003e\n\u003cli\u003eHard-anodised caliper body — the hard-coat finish resists abrasion, corrosion and heat discolouration through the most demanding track sessions\u003c\/li\u003e\n\u003cli\u003eAdvanced cooling geometry — the caliper profile is designed to channel airflow and dissipate heat rapidly, reducing the risk of fluid vaporisation under racing conditions\u003c\/li\u003e\n\u003cli\u003eCompatible with DOT 4 and DOT 5.1 brake fluid — gives the technician flexibility to select the fluid that best suits ambient and track temperatures\u003c\/li\u003e\n\u003cli\u003e30 mm offset and 7.25 mm maximum disc thickness — precise dimensional specification ensures correct disc clearance with matched Brembo racing discs\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePurpose-Built Racing Performance\u003c\/h2\u003e\u003cp\u003eThe GP4-RR sits at the top of Brembo's monoblock racing caliper range, developed directly from MotoGP and World Superbike programmes. Where multi-piece calipers rely on bolted halves, the monoblock design machines the entire body from a single billet of aluminium, removing any possibility of inter-body movement under peak clamping loads. The result is a brake that communicates crisply through the lever, allowing the rider to modulate braking pressure with surgical precision — lap after lap, session after session.\u003c\/p\u003e\u003ch2\u003eThermal Control on Track\u003c\/h2\u003e\u003cp\u003eHeat is the enemy of braking performance. The GP4-RR addresses this through a combination of titanium pistons, which insulate the fluid from caliper body temperature, and a cooling-optimised body profile. Together these features allow consistent braking behaviour even at circuits with extended, high-speed braking zones. The hard-anodised surface treatment further protects the aluminium body against the thermal cycling that can degrade lesser calipers over a full race season.\u003c\/p\u003e\u003ch2\u003eFitment and Compatibility\u003c\/h2\u003e\u003cp\u003eThe Brembo GP4-RR Monoblock Brake Caliper Kit XB9L2A1 is designed for forks with a 108 mm axle-to-caliper mounting hole pitch. This specification is common to a wide range of supersport and superbike platforms, including but not limited to:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHonda CBR 600 RR, CBR 1000 RR, CBR 1000 RR-R\u003c\/li\u003e\n\u003cli\u003eKawasaki ZX-6R, ZX-10 R, ZX-10 RR\u003c\/li\u003e\n\u003cli\u003eYamaha R6, R1, R1M\u003c\/li\u003e\n\u003cli\u003eSuzuki GSX-R 600, GSX-R 750, GSX-R 1000\u003c\/li\u003e\n\u003cli\u003eDucati 848, 899, 959, 1199, 1199 S, 1199 R, 1299, 1299 S\u003c\/li\u003e\n\u003cli\u003eAprilia RSV4, RSV4 R, RSV4 RR, RSV4 RF, RSV4 1100, RSV4 1100 Factory, RS 660, RS 457\u003c\/li\u003e\n\u003cli\u003eBMW S1000RR, HP4, HP4R, M1000RR\u003c\/li\u003e\n\u003cli\u003eTriumph Daytona 675, Daytona 675 R, Daytona 765, Street Triple 765 R, Street Triple 765 RS\u003c\/li\u003e\n\u003cli\u003eMV Agusta F3, F4\u003c\/li\u003e\n\u003cli\u003eKTM RC 390, RC8 1190\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAlways verify the fork mounting pitch and disc thickness on your specific machine before fitting. For use on track only — not approved for road use.\u003c\/p\u003e\u003ch2\u003eCompatible Spare Parts\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBleed screw: part number 05281233\u003c\/li\u003e\n\u003cli\u003eBrembo bleed screw protection cap: part number 05150220\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eXB9L2A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCaliper type\u003c\/td\u003e\n\u003ctd\u003eMonoblock, radial mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCaliper body material\u003c\/td\u003e\n\u003ctd\u003eHard-anodised aluminium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of pistons\u003c\/td\u003e\n\u003ctd\u003e4 (2x 32 mm, 2x 36 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston material\u003c\/td\u003e\n\u003ctd\u003eTitanium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOffset\u003c\/td\u003e\n\u003ctd\u003e30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFork mounting pitch\u003c\/td\u003e\n\u003ctd\u003e108 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum disc thickness\u003c\/td\u003e\n\u003ctd\u003e7.25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake fluid compatibility\u003c\/td\u003e\n\u003ctd\u003eDOT 4, DOT 5.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended use\u003c\/td\u003e\n\u003ctd\u003eRacing and trackday only — not road-legal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Brembo","offers":[{"title":"Default Title","offer_id":53168788570378,"sku":"XB9L2A1","price":4139.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/XB9L2A1_5250ee1e-6752-4fcd-b81e-2770bd08d14b.png?v=1780815198","url":"https:\/\/inter-pace.com\/products\/brembo-xb9l2a1","provider":"Inter-Pace","version":"1.0","type":"link"}