public D8i Alfine Disc 2025
Bike details
Key information split into simple groups.
Bike summary
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Frame Steel
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Groupset Alfine
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Suspension Rigid
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Drivetrain Internally Geared Hub
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Brakes Shimano Deore Hydraulic Disc
Recommended size guide.
SM
158cm - 170cm
MD
168cm - 179cm
LG
176cm - 187cm
Parts list
Main components, grouped by system.
Bike components
Frame
Frame
PUBLIC 100% 4130 Chromoly steel, with fender and rack braze-ons, integrated kickstand bracket
Suspension Fork
PUBLIC 100% 4130 Chromoly steel unicrown disc fork, with fender and rack braze-ons
Drivetrain
Shift Levers
Shimano Alfine Rapidfire trigger shifters for 8-speed internal hub
Cassette
Shimano 20 tooth cog
Crank
Shimano Alfine S501 Crankset, 39T, 170mm
Chain Guide
Painted to match, alloy
Pedals
Wellgo M149 full alloy platform and cage, 9/16
Wheels
Front Hub
Formula alloy hub with quick-release axle (front)
Rear Hub
Shimano Alfine 8-speed internal hub with disc mount
Rims
Painted to match, alloy double wall, 32H 700c
Spokes
14G Stainless steel
Tires
Kenda Kwest, 700x35c, 60TPI, with reflective stripe
Brakes
Brakes
Shimano MT-200 hydraulic disc brake, Deore SM-RT86 160mm rotors, with 3-finger steel levers
Cockpit
Stem
High polished alloy, threadless, +/- 10 degree rise, 25.4 clamp (80mm for S/M; 100mm for L)
Handlebar
PUBLIC Brunch handlebar, alloy, 570mm wide
Grips
PUBLIC Slender Grip, with alloy clamps
Headset
1.125" threadless, steel
Seat
Saddle
PUBLIC Premium Sport Saddle, 153mm wide, chromoly rails, with brass rivets
Seatpost
Alloy micro-adjust with integrated clamp, 27.2mm
Fit data
Numbers for sizing and ride feel.
| Size | SM | MD | LG |
|---|---|---|---|
| Wheels | 700 | 700 | 700 |
| Rider Min Height | 158 cm | 168 cm | 176 cm |
| Rider Max Height | 170 cm | 179 cm | 187 cm |
