SRAM Eagle 70 Transmission
The entry to Transmission: precise mechanical shifting
Specifications
- Speed
- 12-speed
- Derailleur
- Eagle 70 T-Type Full Mount
- Shifter
- Eagle 70 T-Type Trigger
- Crankset
- Eagle 70 DUB Wide
- Crank Lengths
- 170mm
- Chainring
- 32T Direct Mount 3-bolt
- Cassette
- XS-1270 T-Type 10-52T
- Chain
- Eagle 70 Flattop 126L
- Gear Range
- 520%
- Weight
- Approx. 2050g
- Features
- Full Mount, Shimano HG freehub, T-Type actuation
Overview
Eagle 70 Transmission brings the robustness of Full Mount T-Type architecture to budget-conscious riders for the first time. New T-Type cable actuation ratio delivers the most precise mechanical shifts ever, the XS-1270 cassette introduces 10-52T range to traditional Shimano HG freehub bodies at 55 mm chainline, and the sturdy aluminum crankset with optional composite bashguards is built to last. The E-MTB-approved Flattop chain rounds out a remarkably capable groupset for the price.
Features
Full Mount hangerless T-Type derailleur
New T-Type cable actuation for crisp shifts
Shimano HG freehub body compatible (8/9/10-speed)
10-52T range at 55 mm chainline
Replaceable skid plates and outer link
Drag Spring damper for chain retention
Aluminum crank with optional bashguards
T-Type stamped steel chainring
E-MTB approved Flattop chain
Solid pins for e-bike strength
Double-click downshift under load
Clean cockpit design with integrated clamp
Guides for setup
All guidesChain Maintenance
Essential tips for cleaning, lubrication, and extending component life.
Derailleur Indexing
Fine-tune cable tension, limit screws, and B-gap for crisp, accurate shifting under load.
Weather & Conditions Adaptation
Setup adjustments for wet, muddy, dry, and cold conditions — tires, suspension, drivetrain, and brakes.
How we evaluate this component
Product cards, analysis notes, and setup guidance are grounded in public specifications, market positioning, compatibility, and the most likely real-world use cases on trail.
Read the full methodology