Public Bikes

R18 Disc

$674.95 $899.99

Shipping calculated at checkout.
Color Cobalt

Improve your everyday with our new PUBLIC R18 Disc. We went back to the drawing board for a totally redesigned flat bar road bike, featuring all-weather mechanical disc brakes, an updated cockpit, and a 2x9 drivetrain to conquer even the steepest hills. Whether you need a light and fast commuter or a versatile bike for any weekend adventure, the new R18 Disc combines high-performance design with modern commuter sensibility.

The PUBLIC R18 Disc offers a light-weight Chromoly frame now with sizes to fit riders from 4’10 to 6’3”.  Spec changes from previous versions include an upgraded Shimano Sora drivetrain with rapid-fire trigger shifters for quick and effortless shifting, all-weather disc brakes that allow you to stop on a dime, an improved commuter-tested cockpit to maximize speed and comfort, and our Premium Sport Saddle designed to give you the same comfort and performance of a well-worn leather saddle on your very first ride.

Design and aesthetics are a top priority for any PUBLIC bike design, and the new R18 Disc is no exception. The frame features reflective, minimalist pinstripes with premium grips and saddle to match, and the removable alloy fenders will keep your work threads clean from the road to the office. We’re confident that this bike is our most premium commuter yet, and perfect for both men and women who prefer the comfort of a flat handlebar without compromising performance or style.

We strongly encourage our unique Ready to Ride shipping option for this model.  You'll receive a 99% assembled bike right to your doorstep, carefully tuned and packed by our trained technicians in Marin County, California.

Technical Specifications

Frame: PUBLIC 100% Chromoly steel, with fender and rack braze-ons
Fork: PUBLIC chromoly hi-tensile blend unicrown disc fork, with fender and rack braze-ons
Fenders: Polished silver, 47mm alloy fenders (F/760mm, R/1230mm)
Kickstand: Integrated kickstand plate (kickstand not included)

Saddle: PUBLIC Premium Sport Saddle, 153mm wide, chromoly rails, with brass rivets
Grips: PUBLIC Slender Grip, with alloy clamps
Stem: Alloy, threadless high polish silver, 25.4 clamp (80mm for XS/S/M; 100mm for L)
Headset: 1.125" threadless, steel
Pedals: Wellgo M149 full alloy platform and cage, 9/16" axle
Handlebar: PUBLIC alloy riser bar, 610mm wide, 10 deg backsweep, 20mm rise
Seat Post: Alloy micro-adjust with integrated clamp, 27.2mm

Derailleur (F): Shimano Sora R-3000 (2x9)
Derailleur (R): Shimano Sora R-3000 9-speed
Shifter: Shimano Rapid Plus
Crank: Alloy double crankset 46/34 tooth rings (S: 165mm M: 170 L: 175mm)
Cassette: Shimano 9-speed HG400 11-32 tooth cassette
Brakes Promax mechanical disc brakes with 160mm rotors, with alloy 4 finger lever.

Tires: Kenda Kwest 700x32c
Tubes: Presta, 48mm valve
Rims: Alloy double wall, 32H, 700c
Spokes: 14G Stainless steel
Hubs: Alloy hub with bolt-on quick-release skewer
Weight: 27lbs


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