Talos CNC XS Radial Racing Brake Master Cylinder 19x18-20 | XS.19

When lap times and corner entry confidence are non-negotiable, the Talos XS.19 radial brake master cylinder delivers the precision and feedback that track-day riders and full-blown racers demand. CNC-machined from solid billet aluminium and weighing just 312 g, this is a competition-grade master cylinder engineered for 4-pot caliper setups, high-performance sport bikes and serious trackbike builds.

Key Features

• 19 mm piston produces strong, consistent pressure build-up with immediate lever feedback — ideal for large 4-piston brake calipers and high-performance systems
• Adjustable lever ratio of 18–20 mm via a stepped click-adjustment system lets you dial in aggressive bite at 18 mm or a more progressive feel at 20 mm
• CNC-machined billet aluminium housing, black anodised, delivers maximum rigidity, a consistent bite point and minimal weight at 312 g
• Hard-anodised aluminium piston resists wear and corrosion under sustained track heat
• Titanium bleed valve and stainless steel clamp and pivot bolts throughout for corrosion resistance and durability
• Folding brake lever reduces the risk of breakage in a slide or low-speed fall — a critical detail in a racing environment
• Integrated brake light switch keeps the installation clean with no need for additional components

CNC Billet Construction — Rigidity Without Compromise

The XS.19 housing is milled from a single solid block of aluminium on a CNC machining centre. This one-piece billet construction eliminates the flex and inconsistency inherent in cast units, resulting in a bite point that stays identical from the first lap to the last. Combined with the hard-anodised piston and titanium bleeder, every component is chosen specifically for track conditions where failure is not an option.

19 mm Piston — Built for 4-Piston Calipers

The 19 mm bore is the correct choice for riders running large 4-piston radial calipers — including units from Brembo, Nissin and equivalent systems on most litre-class and middleweight superbikes. The result is a powerful, clean pressure stroke that responds immediately to lever input and communicates exactly what the front tyre is doing under maximum deceleration.

Adjustable Lever Ratio — Your Braking, Your Terms

The stepped click-adjustment mechanism moves the lever ratio between 18 mm and 20 mm without tools. Setting a shorter ratio of 18 mm sharpens the initial bite and reduces lever travel for a more aggressive, race-style feel. Extending to 20 mm softens the progression and lengthens the stroke, which suits riders who prefer a more linear, nuanced modulation — or a different tyre compound that demands a gentler initial input. Whichever track or setup you are running, the correct balance is no more than a few clicks away.

Folding Lever — Race Protection in Practice

In any competitive or high-intensity riding environment, a lever that folds on contact rather than snapping clean off can be the difference between riding away and retirement. The folding brake lever on the XS.19 absorbs the rotation of a tip-over or slide and springs back to position, keeping the machine functional where a rigid lever would be scrap.

Fitment & Compatibility

The Talos XS.19 is a radial master cylinder with a 19 mm piston and uses a standard radial mounting pattern. It is compatible with a wide range of sport, superbike, and track-prepared motorcycles including:

• Aprilia: RSV4, RSV4 R, RSV4 RR, RSV4 RF, RSV4 1100, RSV4 1100 Factory, RS 660, RS 457
• BMW: S1000RR, M1000RR, HP4, HP4R
• Bimota: KB998 Rimini
• CFMoto: 450 SR, 675 SR-R
• Ducati: 848, 899, 959, 1199, 1199 S, 1199 R, 1299, 1299 S, V2, V4, V4 S, V4 R
• 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, 990 RC R
• MV Agusta: F3, F4
• QJMotor: SKR 800 RR
• 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: R3, R6, R7, R9, R1, R1M

Compatible across a broad model year range from 2003 to 2026. Always verify handlebar clamp diameter and reservoir mounting before fitting.

Specifications

• Piston diameter: 19 mm
• Lever ratio: 18–20 mm, adjustable
• Lever type: folding with click adjustment
• Housing material: CNC billet aluminium, black anodised
• Piston material: hard-anodised aluminium
• Bleed valve: titanium
• Clamp and pivot bolts: stainless steel
• Weight: 312 g
• Brake light switch: integrated
• Intended use: racing and high-performance road/track
• Part number: XS.19