The Formula FH-521 Freehub Body is a genuine OEM Formula part, supplied including the end cap (DWG-0761).
It is widely used on Trek, Cannondale, Giant, Merida, and COMMENCAL bikes, and designed for Shimano HG 8–11-speed cassettes as well as some 12-speed cassettes with standard spline, such as SRAM Eagle SX.
Not compatible with Shimano 12-speed cassettes.

Originally fitted to Formula DHT-142S and EHL-148S hubs.

Compatibility

Used for hub models:
CL-148S, EHL-148S, TC-72S, TD-148S, ECT-148S, DCL-348A, DCL-348S, EHL-142S, DHL-197

Package contents

• Freehub body FH-521 ×1

• End cap DWG-0761 ×1

• Includes end cap

Compatible bike models

Cannondale

• 2021: Topstone Neo Carbon Lefty 1

• 2022: Topstone Neo Carbon 1 Lefty, Topstone Neo Carbon 3 Lefty, Topstone Neo Carbon Lefty LE

COMMENCAL

• 2017: META HT AM CrMo, META TR V3, META AM V3 ORIGIN, META AM V3 ESSENTIAL, META SX, SUPREME 24", SUPREME JR

• 2018: META AM V3, META HT AM CrMo RACE, META HT POWER, META POWER ORIGIN, SUPREME 24", SUPREME JR, META SX

• 2019: META POWER RIDE

Specifications

• Model: FH-521

• Cassette type: Shimano HG 8–11-speed, compatible with SRAM Eagle SX (not Shimano 12-speed)

• Axle: 12 mm thru-axle

• Bearings: sealed cartridge type

• Includes: end cap (DWG-0761)

• OEM quality: genuine Formula replacement part