First Look: SRAM’s Wireless Downhill Drivetrain Has Arrived
SRAM has officially launched the XX DH T-Type Transmission, marking a major shift in downhill mountain biking. This is the brand’s first fully wireless, DH-specific drivetrain, built on its proven T-Type Transmission platform but redesigned for the demands of gravity racing.
At its core, this isn’t just a shortened Eagle Transmission—it’s a purpose-built system focused on explosive starts, durability, and consistent shifting under load.
Key Features
- 7-speed DH-specific cassette (10–24T)
- Wireless AXS shifting (no cables)
- Full Mount hangerless derailleur design
- Shifts under full load
- Optimised for sprint acceleration
- Approx. system weight: ~1641g
- Price: ~£2,000+ complete drivetrain
In short: this is SRAM’s most advanced downhill drivetrain to date.
What Makes the XX DH Transmission Different?
1. True Shifting Under Load
One of the biggest innovations is the ability to shift while putting down full power.
Unlike traditional drivetrains that require easing off the pedals, SRAM’s T-Type system allows riders to stay fully committed through shifts. For downhill racing, this translates to:
- Faster gate starts
- More consistent acceleration
- Reduced timing errors under pressure
This is a genuine performance upgrade, not just a marketing claim.
2. Hangerless Full Mount Derailleur
The XX DH uses SRAM’s Full Mount interface, eliminating the derailleur hanger entirely.
Benefits include:
- Increased stiffness and alignment precision
- Improved durability in crashes and rock strikes
- Better chain retention and shifting consistency
- Modular, replaceable components
For downhill riders, this design is a big win in terms of reliability.
3. DH-Specific 7-Speed Setup
Instead of a wide-range cassette, SRAM has opted for a tight 7-speed range (10–24T).
Why this matters:
- Faster and more precise shifts
- Reduced drivetrain wear
- Gear steps optimised for downhill tracks
It’s a focused setup designed for racing—not climbing.
4. Wireless AXS Simplicity
The drivetrain runs on SRAM’s AXS wireless platform, removing the need for cables and housing.
Key advantages:
- Clean cockpit setup
- Quick and easy installation
- Customisable controls via the AXS app
- Minimal maintenance
This makes it one of the simplest high-performance drivetrains to set up.
Performance First Impressions
Early impressions suggest:
- Extremely consistent shifting under load
- Noticeably quiet operation
- High durability in aggressive riding conditions
- Slightly slower shift timing than Shimano, but more reliable under pressure
Overall, the system prioritises precision and consistency over outright shift speed.
Weight & Pricing
- Full system weight: ~1641g
- Complete drivetrain price: ~£2,000+
This places it firmly in the premium, race-focused category.
Who Is It For?
The SRAM XX DH T-Type drivetrain is aimed at:
- Downhill racers and competitive riders
- Riders building high-end gravity bikes
- Those looking for maximum performance and reliability
For casual riders, it’s likely excessive—but for racing, it makes sense.
Verdict
The SRAM XX DH Transmission represents a major evolution in downhill drivetrain design.
By combining:
- Wireless shifting
- A hangerless interface
- True shifting under load
SRAM has created a system built specifically for race performance and durability.
Bottom line:
If you’re looking for the most advanced downhill drivetrain available in 2026, this is it.
