Talos X50 Two Piece P4 32/36 108mm Front Left Brake Caliper | X50.108.HD.L

Engineered for riders who demand absolute consistency lap after lap, the Talos X50 front left brake caliper delivers a braking feel that is immediate, progressive and fatigue-free across a full race day. With its asymmetric four-piston layout and hard-anodised two-piece body, the X50.108.HD.L is one of the most capable caliper upgrades available for serious trackday and competition use.

Key Features

• Asymmetric 32/36 mm piston pairing combines strong initial bite with fine, long-range modulation — so you can carry deep into a braking zone and still adjust precisely
• Two-piece body construction maximises rigidity and dimensional accuracy, keeping pad-to-disc contact consistent even under sustained heavy braking
• Stainless steel pistons resist heat build-up, reduce wear and maintain even braking performance through extended high-temperature sessions
• Hard-anodised finish protects the aluminium housing against corrosion, abrasion and thermal stress while keeping the caliper looking race-ready over time
• At 688 g, the X50 is light enough to benefit unsprung weight but substantial enough to absorb the mechanical loads of repeated, hard stops
• 108 mm mounting pitch and front-left orientation make installation straightforward on a wide range of sport and racing machines

Piston Design and Braking Feel

The X50 uses a staggered four-piston setup: two pistons at 32 mm and two at 36 mm. This graduated arrangement means the caliper applies braking force in a controlled ramp rather than an abrupt spike. The result is strong, confident initial braking that transitions smoothly into a highly modulated mid-lever feel — exactly what you need when trail-braking into a corner or managing tyre load through a long, heavy braking event. Fade resistance is notably improved by the stainless steel pistons, which draw less heat from the fluid than aluminium alternatives.

Two-Piece Body Construction

The two-piece caliper body is machined and assembled to tight tolerances, eliminating the flex that can make single-piece cast calipers feel vague under repeated hard use. The hard-anodised surface treatment penetrates the aluminium rather than sitting on top of it, providing a hardness that ordinary anodising cannot match. This keeps the caliper performing consistently across a full season of track use.

Track Use and Safety Notice

The Talos X50 is designed exclusively for racing and closed-circuit use. It is not road-legal and must not be fitted to any motorcycle intended for use on public roads. Brake pads are not included and must be sourced separately. Compatible disc diameters run from 290 mm to 330 mm.

Fitment and Compatibility

The X50.108.HD.L uses a 108 mm radial mounting pitch and is positioned front left. It is compatible with a wide range of sport and superbike platforms, including but not limited to:

• Aprilia RSV4, RSV4 R, RSV4 RR, RSV4 RF, RSV4 1100, RSV4 1100 Factory, RS 660, RS 457
• BMW S1000RR, M1000RR, HP4, HP4R
• Ducati 848, 899, 959, 1199, 1199 S, 1199 R, 1299, 1299 S, V2, V4, V4 R, V4 S
• Honda CBR 600 RR, CBR 1000 RR, CBR 1000 RR-R
• Kawasaki ZX-6R, ZX-10 R, ZX-10 RR, ZX-4 RR, Ninja 400
• KTM RC 390, RC8 1190
• MV Agusta F3, F4
• Suzuki GSX-R 600, GSX-R 750, GSX-R 1000
• Triumph Daytona 675, Daytona 675 R, Daytona 765, Daytona 765 Moto 2, Street Triple 765 R, Street Triple 765 RS
• Yamaha R1, R1M, R3, R6, R7, R9
• Bimota KB998 Rimini
• CFMOTO, QJMotor, and other platforms with 108 mm radial mount spacing — please verify fitment before ordering

Specifications

• Part number: X50.108.HD.L
• Mounting pitch: 108 mm
• Position: Front left
• Pistons: 4 (2x 32 mm, 2x 36 mm)
• Piston material: Stainless steel
• Body: Two-piece
• Weight: 688 g
• Finish: Hard anodised
• Compatible disc diameter: 290–330 mm
• Brake pads: Not included
• Homologation: Racing use only — not road-legal