With its clean looks, exacting attention to detail and functional integration, the 257 AL FOUR is the partner in crime for your daily rides. Its Premium Aluminium frame is light, versatile and powder coated for durability. A powerful kickstand, premium fenders and the intuitive Shimano Deore 1x11 single chainring groupset gives you that joyful elegant feeling of velocity and safety.
Technology
Swiss Design
Durable
Functional
Simple
Technical Overview
Frameset
Frame:
257 Premium Aluminium Smoothwelded | Staggered Top Tube | Powder Coat Finish | Internal Cable Routing | BSA Threaded Bottom Bracket | Flat Mount Disc | 12x142mm Thru-Axle
Fork:
257 Premium Aluminium | Fender Mounts | Flat Mount Disc | 12x100mm Thru-Axle
Cockpit
Handlebar:
BMC LSB 03
Stem:
BMC RSM01
Seatpost:
BMC LSP 02
Saddle:
Selle Royal Vivo
Seat
Seatpost:
BMC LSP 02
Saddle:
Selle Royal Vivo
Drivetrain
Gears:
1x11
Crankset:
FSA Vero Pro 40T
Cassette:
SHIMANO Deore CS-M5100 11 spd 11-42T
Chain:
SHIMANO Deore CN-HG601 11 spd
Rear Derailleur:
SHIMANO Deore RD-M5120 11 spd
Shifters:
SHIMANO Deore SL-M5100 Rapidfire Plus
Brakes
Brake Levers / Calipers:
SHIMANO MT200 levers | BR-U300 Calipers
Rotors:
SHIMANO RT10 Rotors 180 / 180mm
Wheels
Rims:
PFR300
Hubs (F/R):
CL-712 / RXC-142S
Tires:
Pirelli Angel GT - 37mm
Additional Information
Tire Clearance:
42mm (Measured Width)
ASTM Classification:
Level 2
Weight Limit:
120 Kg
| Size | S | M | L | XL |
|---|---|---|---|---|
| Rider Height | <168 | 168-180 | 178-190 | >190 |
| Reach | 400 | 415 | 425 | 440 |
| Stack | 560 | 590 | 620 | 650 |
| Bar Drop | ||||
| Bar Reach | ||||
| Bar Rise | ||||
| Bar Sweep | ||||
| Bar Width | 600 | 600 | 600 | 600 |
| Base Bar Drop Flat Cockpit | ||||
| Base Bar Drop V-Cockpit | ||||
| Base Bar Reach Flat Cockpit | ||||
| Base Bar Reach V-Cockpit | ||||
| BB Drop | 67 | 67 | 67 | 67 |
| BB Drop (SLACK) | ||||
| BB Drop (STEEP) | ||||
| BB Height (SLACK) | ||||
| BB Height (STEEP) | ||||
| Chainstay | ||||
| Crank Length | 170 | 170 | 175 | 175 |
| LT | BB Drop (SLACK) | ||||
| LT | BB Drop (STEEP) | ||||
| LT | BB Height (SLACK) | ||||
| LT | BB Height (STEEP) | ||||
| LT | Chainstay | ||||
| LT | Fork Length | ||||
| LT | Fork Rake | ||||
| LT | Frame Size | ||||
| LT | Front Center (SLACK) | ||||
| LT | Front Center (STEEP) | ||||
| LT | Head Tube | ||||
| LT | HT Angle (SLACK) | ||||
| LT | HT Angle (STEEP) | ||||
| LT | Reach (SLACK) | ||||
| LT | Reach (STEEP) | ||||
| LT | Rider Height | ||||
| LT | Seat Tube | ||||
| LT | ST Angle @750mm Saddle Height (SLACK) | ||||
| LT | ST Angle @750mm Saddle Height (STEEP) | ||||
| LT | ST Angle Actual (SLACK) | ||||
| LT | ST Angle Actual (STEEP) | ||||
| LT | ST Angle Effective (SLACK) | ||||
| LT | ST Angle Effective (STEEP) | ||||
| LT | Stack (SLACK) | ||||
| LT | Stack (STEEP) | ||||
| LT | Stand Over Height (80 in Front of BB) | ||||
| LT | Stand Over Height (Lowest Point) | ||||
| LT | Top Tube (SLACK) | ||||
| LT | Top Tube (STEEP) | ||||
| LT | Wheelbase (SLACK) | ||||
| LT | Wheelbase (STEEP) | ||||
| ST | BB Drop (SLACK) | ||||
| ST | BB Drop (STEEP) | ||||
| ST | BB Height (STACK) | ||||
| ST | BB Height (STEEP) | ||||
| ST | Chainstay | ||||
| ST | Fork Length | ||||
| ST | Fork Rake | ||||
| ST | Frame Size | ||||
| ST | Front Center (SLACK) | ||||
| ST | Front Center (STEEP) | ||||
| ST | Head Tube | ||||
| ST | HT Angle (SLACK) | ||||
| ST | HT Angle (STEEP) | ||||
| ST | Reach (SLACK) | ||||
| ST | Reach (STEEP) | ||||
| ST | Rider Height | ||||
| ST | Seat Tube | ||||
| ST | ST Angle @750mm Saddle Height (SLACK) | ||||
| ST | ST Angle @750mm Saddle Height (STEEP) | ||||
| ST | ST Angle Actual (SLACK) | ||||
| ST | ST Angle Actual (STEEP) | ||||
| ST | ST Angle Effective (SLACK) | ||||
| ST | ST Angle Effective (STEEP) | ||||
| ST | Stack (SLACK) | ||||
| ST | Stack (STEEP) | ||||
| ST | Stand Over Height (80 in Front of BB) | ||||
| ST | Stand Over Height (Lowest Point) | ||||
| ST | Top Tube (SLACK) | ||||
| ST | Top Tube (STEEP) | ||||
| ST | Wheelbase (SLACK) | ||||
| ST | Wheelbase (STEEP) | ||||
| Fork Length | 408 | 408 | 408 | 408 |
| Fork Rake | 45 | 45 | 45 | 45 |
| Frame Size | ||||
| Front Center | 631 | 657 | 677 | 703 |
| Front Center (SLACK) | ||||
| Front Center (STEEP) | ||||
| Head Tube | 133 | 165 | 197 | 229 |
| Head Tube Angle | 70 | 70 | 70 | 70 |
| HT Angle (SLACK) | ||||
| HT Angle (STEEP) | ||||
| Pad Reach Flat Cockpit | ||||
| Pad Reach V-Cockpit | ||||
| Pad Stack Flat Cockpit | ||||
| Pad Stack V-Cockpit | ||||
| Reach (SLACK) | ||||
| Reach (STEEP) | ||||
| Rear Center | 440 | 440 | 440 | 440 |
| Saddle Height Range | ||||
| Seat Angle | 74 | 74 | 74 | 74 |
| Seat Tube | 480 | 510 | 540 | 555 |
| Seatpost Drop | ||||
| Seatpost Length | 350 | 350 | 350 | 350 |
| Seatpost Offset | 15 | 15 | 15 | 15 |
| ST Angle @750mm Saddle Height (SLACK) | ||||
| ST Angle @750mm Saddle Height (STEEP) | ||||
| ST Angle Actual (SLACK) | ||||
| ST Angle Actual (STEEP) | ||||
| ST Angle Effective (SLACK) | ||||
| ST Angle Effective (STEEP) | ||||
| Stack (SLACK) | ||||
| Stack (STEEP) | ||||
| Stand Over Height (80 in Front of BB) | ||||
| Stand Over Height (Lowest Point) | ||||
| Standover Height | 760 | 790 | 819 | 838 |
| Stem Angle | ±8 | ±8 | ±8 | ±8 |
| Stem Length | 90 | 90 | 100 | 100 |
| Top Tube | 560 | 584 | 603 | 626 |
| Top Tube (SLACK) | ||||
| Top Tube (STEEP) | ||||
| Trail | 75 | 75 | 75 | 75 |
| Wheelbase | 1062 | 1088 | 1109 | 1135 |
| Wheelbase (SLACK) | ||||
| Wheelbase (STEEP) |
