Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices

Today’s Deals

2025 Public

R18 Disc

A 700c steel frame commuter bike with mid-range components and promax mechanical disc brakes.
Compare the full range

Manufacturer Price

$899
Weight27.0 lbs  
FrameSteel
SuspensionRigid
ForkSteel
Wheels700c Aluminum
Drivetrain2 × 9
GroupsetSora
BrakesPromax Mechanical Disc
View on publicbikes.comLearn about Public
Similar Bikes
Top Comparison
Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

36 mph

R18 Disc

31 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Sizing
XS

4'11" – 5'5"

SM

5'2" – 5'7"

MD

5'4" – 5'10"

LG

5'7" – 6'1"

🐐 Estimated

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Specs
Build
Frame

PUBLIC 100% Chromoly steel, with fender and rack braze-ons

ColorsMustard; Cream; Cobalt; Comet Grey

Fork

PUBLIC chromoly hi-tensile blend unicrown disc fork, with fender and rack braze-ons

Headset

1.125" threadless, steel

Stem

Alloy, threadless high polish silver, 25.4 clamp (80mm for XS/S/M; 100mm for L)

Handlebar

PUBLIC alloy riser bar, 610mm wide, 10 deg backsweep, 20mm rise

Saddle

PUBLIC Premium Sport Saddle, 153mm wide, chromoly rails, with brass rivets

Seatpost

Alloy micro-adjust with integrated clamp, 27.2mm

TypeRigid

Pedals

Wellgo M149 full alloy platform and cage, 9/16" axle

Grips

PUBLIC Slender Grip, with alloy clamps

Groupset
Rear Derailleur

Shimano Sora R-3000 9-speed

Front Derailleur

Shimano Sora R-3000 (2x9)

Crank

Alloy double crankset 46/34 tooth rings (S: 165mm M: 170 L: 175mm)

Shifters

Shimano Rapid Plus

Cassette

Shimano 9-speed HG400 11-32 tooth cassette

Brakes

Promax mechanical disc brakes with 160mm rotors, with alloy 4 finger lever.

TypePromax Mechanical Disc

Wheels
Rims

Alloy double wall, 32H, 700c

Spokes

14G Stainless steel

Front Hub

Alloy hub with bolt-on quick-release skewer

Rear Hub

Alloy hub with bolt-on quick-release skewer

Tires

Kenda Kwest 700x32c

Accessories
Fenders

Polished silver, 47mm alloy fenders (F/760mm, R/1230mm)

Rider Notes
Riders Also Viewed

First added June 16

Last updated March 21

Not listed for 72 days