Twitter Bikes
⏱ Made to Order: 10-25 Business daysTW3900XC - Twitter AL6061 Mountain Bike
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Twitter TW3900XC Mountain
Built to take the trail head-on, the Twitter TW3900XC is a lightweight AL6061 aluminum-alloy XC hardtail engineered for confident climbing and fast descents. Its smooth-welded MTB frame with internal cable routing, coil suspension fork with manual lockout, and hydraulic disc braking deliver control on every surface — while three drivetrain configurations let you dial the gearing to your terrain. Wide 29" / 27.5" wheels and double-wall rims keep momentum rolling from singletrack to the open path.
Key Features
- ▪ AL6061 Aluminum-Alloy MTB Frame with smooth welding and internal cable routing for a clean, durable XC platform.
- ▪ Coil Suspension Fork with Manual Lockout — soak up the trail when you want it, lock it out for efficient climbs.
- ▪ TEKTRO Hydraulic Disc Brakes (160mm front / 160mm rear) for strong, consistent all-weather stopping power.
- ▪ Three Drivetrain Configurations — SHIMANO M315 3×8, RS LTWOO 3×10, or RS LTWOO 2×12 to match your terrain.
- ▪ Double-Wall Disc-Compatible Wheelset on sealed-bearing hubs with CST 29" / 27.5" × 2.1" tires.
- ▪ 720mm Alloy Cockpit (31.8×720mm bar, 90mm stem) with ergonomic MTB grips and saddle for trail control.
See It In Motion
Lightweight alloy frame with internal routing — built to make the trail feel easy.
Climbs efficient, descends fearless — control when the trail turns rough.
Wide-range gearing for steep climbs and fast descents — built to take a beating.
Drivetrain Configurations
SHIMANO M315 — 3×8 Speed (24S)
SHIMANO M315 shifters with a TY700 front and TY300 rear derailleur, an RS aluminum-alloy square-axis 24-34-42T crankset and SUGEK 11–32T 8-speed cassette. A dependable, easy-shifting setup for all-round trail riding.
RS LTWOO — 3×10 Speed (30S)
RETROSPEC (LTWOO) 3×10 shifters and derailleurs with an RS aluminum-alloy hollow 24-32-42T crankset and SUGEK 11–36T 10-speed cassette. Wider range and tighter steps for varied terrain and longer climbs.
RS LTWOO — 2×12 Speed (24S)
RETROSPEC (LTWOO) 2×12 shifters and derailleurs with an RS aluminum-alloy hollow 28-38T crankset and a huge SUNSHINE 11–42T 12-speed cassette. Massive climbing range with clean, modern shifting.
Specifications
| 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 |
| Headset | Aluminum alloy, 44×44 mm |
| Shifters |
SHIMANO M315: SHIMANO M315, 3×8-speed RS LTWOO 3×10: RETROSPEC (LTWOO), 3×10-speed RS LTWOO 2×12: RETROSPEC (LTWOO), 2×12-speed |
| Front Derailleur |
SHIMANO M315: SHIMANO TY700 RS LTWOO 3×10: RETROSPEC (LTWOO) 3-speed RS LTWOO 2×12: RETROSPEC (LTWOO) 2-speed |
| Rear Derailleur |
SHIMANO M315: SHIMANO TY300 RS LTWOO 3×10: RETROSPEC (LTWOO) 10-speed RS LTWOO 2×12: RETROSPEC (LTWOO) 12-speed |
| Crankset |
SHIMANO M315: RS aluminum alloy, square axis, 24-34-42T RS LTWOO 3×10: RS aluminum alloy hollow, 24-32-42T RS LTWOO 2×12: RS aluminum alloy hollow, 28-38T |
| Cassette |
SHIMANO M315: SUGEK 8-speed, 11–32T RS LTWOO 3×10: SUGEK 10-speed, 11–36T RS LTWOO 2×12: SUNSHINE 12-speed, 11–42T |
| Chain |
SHIMANO M315: SUMC 8-speed RS LTWOO 3×10: SUMC 10-speed RS LTWOO 2×12: SUMC 12-speed |
| Bottom Bracket |
SHIMANO M315: Kenli square axis, BB68 threaded RS LTWOO 3×10 / 2×12: Hollow, BSA68×24 threaded |
| Brakes | TEKTRO hydraulic disc, 160 mm front / 160 mm rear |
| 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" |
| Grips | 22.2×120 mm, comfortable MTB style |
| Saddle | Lightweight and ergonomic for MTB riding |
| Pedals | Lightweight & skid-resistant |
| Cables | JAGWIRE internal & external routing |
| Frame Size | 29" (27.5") × 15" / 17" / 19" |
| Colors | White · Dark Gray · Matte Black |
| Net Weight | 13.6 KG (all variants) |
What's in the Box
- Factory pre-assembled Twitter TW3900XC mountain bike
- Standard safety reflectors (handlebar, seat post, front & rear wheels)
- Bottle cage + tools + rear kickstand
- Official manual + Warranty card
We reserve the right to make changes to product information at any time without prior notice, including specifications, models, colors, and materials.
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.
