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

Engineered for riders who demand the ultimate in braking precision and all-day comfort at the lever, the Talos XR.19 is a genuine race-grade radial brake master cylinder that puts professional-level control exactly where your fingers expect it. CNC-machined from solid billet aluminium and finished with a full titanium hardware package, it delivers a direct, powerful and consistently modulated feel whether you are pushing lap times on a circuit or committing to a late-braking point at the end of the straight.

Key Features

• 19 mm bore piston produces outstanding hydraulic output, perfectly matched to large four-piston racing calipers with piston pairings of 34/34, 32/36 or 34/38
• Click-adjustable lever ratio spanning 18 mm, 19 mm and 20 mm lets you dial in the exact feel for the tyre, track and riding style — long and progressive at 18 mm, medium at 19 mm, short and aggressive at 20 mm
• Folding racing lever protects against damage in a slide, tip-over or contact in race conditions — an essential safety feature for track use
• Full titanium hardware throughout: pivot bolt, clamp bolts and bleeder — extremely light, unmatched strength, completely corrosion-free
• Hard-anodised housing resists scratches, corrosion, high thermal loads and mechanical abrasion while giving the XR series its distinctive titanium racing aesthetic
• 90-degree fluid redirect within the lever body; compatible with DOT 4 brake fluid

CNC Billet Aluminium Housing — Rigidity and Motorsport Precision

The XR.19 body is machined from a single solid aluminium billet, a process that eliminates any flex in the housing and ensures that every gram of lever input is converted into hydraulic pressure with zero energy lost to flex or distortion. Under the extreme thermal loads generated by repeated hard braking on track, the structure remains dimensionally stable — keeping the pressure point exactly where you set it, lap after lap. The result is an overall weight of approximately 260 g, remarkable for a master cylinder with this level of output.

Titanium Hardware — Uncompromising Premium Quality

Where most aftermarket master cylinders rely on steel fasteners, the XR.19 uses titanium for the pivot bolt, clamp bolts and bleeder. The advantages are straightforward: titanium is significantly lighter than steel of equivalent strength, it is inherently corrosion-free and it machines to tolerances that maintain ultra-precise mechanical operation over thousands of braking events. Aluminium and titanium hardware is one of the defining characteristics of true high-end racing components, and the XR.19 makes no compromise on this point.

19 mm Piston — Maximum Braking Performance and a Stable Pressure Point

The 19 mm main piston is the heart of the XR.19's performance. Its larger bore generates the hydraulic force needed to fully exploit large racing caliper configurations including 34/34, 32/36 and 34/38 piston pairings, as well as racing monobloc calipers and high-performance brake systems. Despite this power, the piston delivers a smooth, controllable pressure point that remains consistent at high speed — precisely the behaviour that supersport and superbike riders require when braking from well over 200 km/h.

Adjustable Lever Ratio 18–20 mm — Fine-Tuning Like the Professionals

The click-adjustable pivot transforms the XR.19 into a truly personal piece of equipment. At 18 mm the lever travel is at its longest, giving a fine and progressive feel that suits smooth or technical tracks where modulation matters most. The 19 mm centre position offers a balanced, medium feel for general circuit use. At 20 mm the travel shortens to its most aggressive setting, delivering the quickest, most direct response for riders who want an immediate, powerful bite. Adjusting between positions takes seconds and requires no tools.

Folding Lever — Protection on Track and on the Road

The folding racing lever is not merely a cosmetic detail. In the event of a slide, a tip-over in the paddock or any contact during racing, the lever folds rather than snapping — preserving both the master cylinder body and the rider's ability to continue. On track this is an indispensable safety feature; on the road it avoids the inconvenience of a broken lever at exactly the wrong moment.

Hard-Anodised Surface — Durable, Premium Finish

The hard-anodised treatment applied to the XR.19 housing provides a surface that is far harder than standard anodising, resisting scratches from debris, corrosion from brake fluid splashes, high thermal stress from prolonged hard braking and the mechanical abrasion of repeated lever cycles. It also defines the signature titanium-toned racing look that identifies the entire XR series at a glance.

Fitment and Compatibility

The Talos XR.19 radial brake master cylinder is a universal radial-mount unit suitable for a wide range of motorcycles equipped with standard radial master cylinder fittings. Compatible models include but are not limited to:

• Aprilia: RSV4, RSV4 R, RSV4 RR, RSV4 RF, RSV4 1100, RSV4 1100 Factory, RS 660, RS 457, Tuono V4, V4 R, V4 S
• BMW: S1000RR, M1000RR, HP4, HP4R
• Bimota: KB998 Rimini
• CFMoto: 450 SR, 675 SR-R, 990 RC R
• Ducati: 848, 899, 959, 1199, 1199 S, 1199 R, 1299, 1299 S, Panigale 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
• MV Agusta: F3, F4
• QJMotor: SKR 800 RR, V2 890, V2 955
• Suzuki: GSX-R 600, GSX-R 750, GSX-R 1000
• Triumph: Daytona 675, Daytona 675 R, Daytona 765, Daytona 765 Moto2, Street Triple 765 R, Street Triple 765 RS
• Yamaha: R1, R1M, R3, R6, R7, R9

Fitment covers model years 2003 through 2026 across the above platforms. Always confirm radial master cylinder mounting compatibility with your specific model and year before ordering.

Specifications

• Piston diameter: 19 mm
• Lever ratio: 18–20 mm, click-adjustable
• Lever: folding, with 90-degree fluid redirect
• Housing material: CNC billet aluminium
• Hardware: titanium (pivot bolt, clamp bolts, bleeder)
• Surface finish: hard-anodised
• Brake fluid compatibility: DOT 4
• Weight: approximately 260 g
• Type: radial racing brake master cylinder
• Part number: XR.19