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⏱ Made to Order: 10-25 Business daysTW3900XC - Twitter AL6061 Mountain Bike
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Key Components
- Frame Size: 29" (27.5") × 15" / 17" / 19"
- Colors: White / Dark Gray / Matte Black
- Weight: 13.6 kg (all variants)
Frame & Structure
- Frame: TW3900XC, MTB geometry, AL6061 aluminum alloy, smooth welding, internal cable routing
- Fork: Aluminum alloy suspension fork, coil system with manual lockout
- Seat Post: Aluminum alloy, 31.6×350 mm
- Handlebar: Aluminum alloy handlebar (31.8×720 mm) with 90 mm stem
- Clamps: Aluminum alloy quick-release, 34.9 mm
- Headset: Aluminum alloy, 44×44 mm
- Washer: Aluminum alloy, 3×28.6×10 mm
Drivetrain Options
Variant 1 – SHIMANO M315 3×8-Speed
- System: SHIMANO M315 (3×8-speed)
- Shifters: SHIMANO M315 (3×8-speed)
- Front Derailleur: SHIMANO TY700
- Rear Derailleur: SHIMANO TY300
- Crankset: RS aluminum alloy, square axis 24-34-42T
- Cassette: SUGEK 8-speed, 11–32T
- Chain: SUMC 8-speed
- Bottom Bracket: Kenli square axis, BB68 threaded
Variant 2 – LTWOO 3×10-Speed
- System: RETROSPEC (LTWOO) 3×10-speed
- Shifters: RETROSPEC (LTWOO) 3×10-speed
- Front Derailleur: RETROSPEC (LTWOO) 3-speed
- Rear Derailleur: RETROSPEC (LTWOO) 10-speed
- Crankset: RS aluminum alloy hollow 24-32-42T
- Cassette: SUGEK 10-speed, 11–36T
- Chain: SUMC 10-speed
- Bottom Bracket: Hollow, BSA68×24 threaded
Variant 3 – LTWOO 2×12-Speed
- System: RETROSPEC (LTWOO) 2×12-speed
- Shifters: RETROSPEC (LTWOO) 2×12-speed
- Front Derailleur: RETROSPEC (LTWOO) 2-speed
- Rear Derailleur: RETROSPEC (LTWOO) 12-speed
- Crankset: RS aluminum alloy hollow 28-38T
- Cassette: SUNSHINE 12-speed, 11–42T
- Chain: SUMC 12-speed
- Bottom Bracket: Hollow, BSA68×24 threaded
Wheelset & Tires
- Hubs: RS aluminum alloy, 2 sealed bearings, disc-compatible, 32 holes
- Rims: RS aluminum alloy, double wall with rivets, W25×H21 mm
- Spokes: SHUNJIU circular 14G
- Tires: CST 29" / 27.5" × 2.1"
Braking System
- Brakes: TEKTRO hydraulic disc, 160 mm front / 160 mm rear
Additional Components
- Grips: 22.2×120 mm, comfortable MTB style
- Saddle: Lightweight and ergonomic for MTB riding
- Pedals: Lightweight & skid-resistant
- Cables: JAGWIRE internal & external routing
Included Accessories
- Reflectors: Handlebar, seat post, front wheel, rear wheel
- Extras: Bottle cage + tools + rear kickstand
- Documentation: Manual + warranty card
TW3900XC Features
Why choose this bike
AL6061 Smooth Weld Frame
Durable aluminum frame with smooth welding, internal cable routing, and UV-resistant gloss finish.
Durable aluminum frame with smooth welding, internal cable routing, and UV-resistant gloss finish.
Suspension Fork with Lockout
Coil-sprung alloy fork with manual lockout provides adjustable comfort and control.
Coil-sprung alloy fork with manual lockout provides adjustable comfort and control.
Multi-Speed Options
Configurable in 3×8, 3×10, or 2×12-speed systems to suit your riding style.
Configurable in 3×8, 3×10, or 2×12-speed systems to suit your riding style.
Hydraulic Disc Brakes
TEKTRO hydraulic disc brakes deliver consistent stopping power in all conditions.
TEKTRO hydraulic disc brakes deliver consistent stopping power in all conditions.
Double-Wall Rims
RS alloy rims with 32H hubs and INNOVA 29"/27.5" tires for stability and grip.
RS alloy rims with 32H hubs and INNOVA 29"/27.5" tires for stability and grip.
Modern Color Choices
Available in White, Dark Gray, and Earth Blue for a refined XC look.
Available in White, Dark Gray, and Earth Blue for a refined XC look.
Versatile Drivetrain Options
From 8-speed to 12-speed setups
Choose your perfect drivetrain — SHIMANO M315, LTWOO 3×10, or LTWOO 2×12 for customized mountain performance.
AL6061 MTB Frame
Built for XC endurance
The TW3900XC’s lightweight aluminum frame and internal cable routing provide strength and precision for off-road adventures.
