2025 LTWOO eTX electronic MTB groupset upgrade

The LTWOO eTX MTB Electronic Groupset delivers fully wireless shifting with rugged, trail-ready performance for aggressive XC, trail, and enduro builds. This 10–12-speed compatible setup features a compact electronic shifter, long-cage rear derailleur, and internal chain damping. Now paired with your choice of 2-piston or 4-piston hydraulic disc brakes, this system offers the stopping power and control required for modern mountain biking.

Key Features:

• Wireless 10–12-speed electronic shifting
• Wide-range gearing support up to 52T
• Internal chain stabilizer for rough terrain
• Lightweight, no-cable cockpit integration
• Brake options: 2-piston for weight savings or 4-piston for max power
• CR2032-powered shifter, aluminum derailleur construction
  

Shifter – SL-ET1210

• Speed Compatibility: 10–12-speed
• Installation: Left or Right side (dual clamp compatible)
• Power Source: CR2032 battery
• Main Material: Composite
• Weight: 50g
• Notes: Wireless two-button remote; ergonomic and low-profile design

Rear Derailleur – RD-ET1210

• Speed Compatibility: 10–12-speed
• Max Gear Range: 10/11–46T and 10/11–52T compatible
• Main Material: Aluminum
• Cage Material: Aluminum
• Internal Chain Stabilizer: Yes (for rough terrain damping)
• Weight: 426g
• Notes: Wireless electronic shifting with long cage design for wide-range drivetrains

Braking System – Hydraulic Disc (Choose 2-Piston or 4-Piston)

2-Piston Brake Option

• Levers: BL-M4000-R (2-finger) / BL-M4002-R (3-finger)
• Calipers: BR-M4000-F
• Piston Count: 2
• Pads: Standard brake pads
• Adjustment: Tool-free reach
• Installation: Direct mount (A post) / Adapter (B post)
• Weight:
  • Levers: 131g / 138g
  • Caliper: 109g

4-Piston Brake Option

• Levers: BL-M4000-R (2-finger) / BL-M4002-R (3-finger)
• Calipers: BR-M4002-F
• Piston Count: 4
• Pads: Linear cooling brake pads
• Adjustment: Tool-free reach
• Installation: Direct mount (A post) / Adapter (B post)
• Weight:
  • Levers: 131g / 138g
  • Caliper: 121g

Both brake systems support mineral oil and funnel oil filling.

Why Choose This Groupset?

The LTWOO eTX MTB Electronic Groupset offers the simplicity of wireless shifting, trail-proven durability, and wide drivetrain compatibility. Whether you're racing XC or sending enduro lines, this system delivers crisp shifting, low maintenance, and a clean cockpit for modern mountain biking.

What’s Included in the Box?

• SL-ET1210 Wireless Shifter (with clamp)
• RD-ET1210 Long Cage Electronic Rear Derailleur
• 1x CR2032 Battery (pre-installed)
• Hydraulic Brake Levers (BL-M4000-R or BL-M4002-R)
• Hydraulic Calipers (BR-M4000-F or BR-M4002-F)
• Mounting hardware
  

Go wireless and ride smarter. Upgrade to the LTWOO eTX MTB Electronic Groupset with your choice of 2 or 4-piston hydraulic brakes for total trail control.