SRAM GX Eagle 12-Speed 32T DUB Boost 55mm Chainline Crankset

Built around a 55mm chainline for 141/148mm Boost hubs, this SRAM GX Eagle DUB crankset is for 12-speed Eagle mountain bikes whose frames call for that figure. It carries a 32T X-SYNC 2 direct mount chainring on forged aluminum arms.

It comes in 170 or 175mm lengths with a Lunar Gray finish. The DUB bottom bracket is sold separately, so plan that purchase together with the crank.

Who It's For

• Riders on SRAM Eagle 12-speed with Boost rear spacing and a 55mm chainline frame spec
• Trail riders who want a robust aluminum crank with a 32T ring
• Builds already using, or ready to buy, a SRAM DUB bottom bracket
• Consider a different crank if you need a 52mm chainline, a 165mm arm, or a non-DUB spindle

What to Look For

• Chainline: 55mm, Boost 141/148mm hubs. Do not mix this up with the 52mm GX Eagle Boost version.
• Spindle interface: SRAM DUB, with no bottom bracket included.
• Length: 170 or 175mm only.

Key Features

Forged 7000-series aluminum arms give this crank its durability. They are made to take hits from rocks and roots without the worry that comes with carbon.

SRAM DUB is the spindle standard, so the crank needs a DUB bottom bracket matched to your frame. That bottom bracket isn't included.

The X-SYNC 2 32T chainring mounts directly to the crank and is made for Eagle chains, with a tooth profile SRAM credits for quieter running and better mud shedding.

Two lengths, 170 and 175mm, cover riders of average to long inseam; use your fit numbers to choose.

Rider Intent Summary

• Biggest strengths: Durable aluminum construction, a 55mm Boost chainline and an Eagle-specific direct mount ring.
• Tradeoffs: Only two lengths, a fixed 32T ring, and a separate bottom bracket purchase.
• What makes it different: The 55mm chainline is the defining spec; it is the GX Eagle Boost crank for frames that list that number.

Victory's Take

We see this 55mm GX Eagle crank as a straightforward replacement or upgrade for Boost trail bikes. Victory Bicycle Studio can confirm the chainline your frame wants before you commit.

Specifications

• Brand: SRAM
• Model: GX Eagle DUB Crankset
• Chainring: 32T X-SYNC 2, direct mount
• Chainrings: 1x, chain-retaining single
• Drivetrain speeds: 12
• Spindle interface: SRAM DUB
• Chainline: 55mm
• Hub compatibility: 141/148mm Boost hubs
• Crank lengths: 170, 175mm
• Arm material: 7000-series forged aluminum
• Color: Lunar Gray
• Pedal thread: 9/16"
• Intended use: Mountain
• Bottom bracket: Not included