Description
BMC 257 Urban Challenge AL Four Step Thru
Experience the perfect blend of style and functionality with the BMC 257 Urban Challenge AL Four Step Thru. Designed with a premium aluminum frame, this bike offers a lightweight yet robust ride, ideal for navigating urban environments with ease. Its clean aesthetic and attention to detail make it a standout choice for daily commutes or leisurely rides.
- Premium Aluminum frame for a lightweight and versatile ride
- Functional integration for enhanced performance
- Designed for everyday urban adventures
- 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
- Gears: 1x11-speed
- Crankset: FSA Vero Pro, 40T chainring
- Cassette: Shimano Deore (CS-M5100), 11-42T
- Rear Derailleur: Shimano Deore (RD-M5120)
- Shifters: Shimano Deore (SL-M5100) Rapidfire Plus
- Chain: Shimano Deore CN-HG601
- Bottom Bracket: BSA Threaded
- Brake Levers: Shimano MT200 hydraulic
- Calipers: Shimano BR-U300 flat mount
- Rotors: Shimano RT10, 180mm front / 180mm rear
- Rims: PFR300
- Hubs (F/R): CL-712 front / RXC-142S rear
- Tires: Pirelli Angel GT, 37mm
- Max Tire Clearance: 42mm (measured width)
- Handlebar: BMC LSB 03 flat bar
- Stem: BMC RSM01
- Seatpost: BMC LSP 02
- Saddle: Selle Royal Vivo
- Accessories: Custom premium fenders with an integrated rear cargo carrier/rack, and a heavy-duty kickstand
- Weight Limit: 120 kg (maximum system weight including bike, rider, and gear)
- Riding Classification: ASTM Level 2 (designed for paved roads and smooth gravel paths)
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Frequently Asked Questions
Do you offer free shipping?
Yes — free shipping on orders over $100 on gear, apparel and shoes. Heavy or oversized items over 10 lbs are excluded. See the full shipping policy.
Can I pick up my order at a store?
Yes, and it is free. Choose in-store pickup at checkout and collect at Doral, Coral Gables or North Miami Beach — we will email you as soon as your order is ready. See addresses and hours.
When will my order arrive?
The estimated delivery window is shown on this page above the Add to cart button and again at checkout, based on the item and your address. You will get a tracking email as soon as it ships.
Are your bikes assembled and ready to ride?
Yes. Every bike is pre-assembled, tuned and safety-checked by our mechanics before it leaves the shop, so it is ready to ride when you get it. More about our shop services.
What if it does not fit?
You have 30 days to return unused items in their original packaging. Read the return policy.
Can someone help me choose the right size or model?
That is what our stores are for. Come see us in Doral, Coral Gables or North Miami Beach, book a Retul bike fit, or send us a message and a real person will answer.
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