Accueil » Produits » CRANKSET LEGION AMMONITE AL7075 FORGED | Series ULTIMATE (170mm to 180mm) | Color Black | BUILT FOR ELITE RIDERS >> Available in November 2026

CRANKSET LEGION AMMONITE AL7075 FORGED | Series ULTIMATE (170mm to 180mm) | Color Black | BUILT FOR ELITE RIDERS >> Available in November 2026

496.00$ TTC

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Description

ULTIMATE SERIES – FULL POWER

The ultimate expression of the AMMONITE platform, engineered exclusively for adult riders and elite-level competition.

Unlike the JUNIOR, EXPERT, and MASTER series, the ULTIMATE features a dedicated fixed-length architecture. By deliberately eliminating the adjustable spacer system, its structure is optimized around a single objective: maximum stiffness and uncompromising power transfer.

Every watt generated by the rider is transmitted directly to the track, making the ULTIMATE the stiffest, most responsive, and highest-performing crankset in the entire AMMONITE range.

FORGED TECHNOLOGY – UNCOMPROMISING POWER

At the heart of every LEGION AMMONITE is a forged 7075-T6 aluminum construction.

The forging process reorganizes and compresses the material’s grain structure in the direction of mechanical loads, creating a stronger and stiffer structure than conventional manufacturing methods while maintaining an optimized weight.

Every watt generated by the rider is efficiently transferred to the track, whether out of the gate, accelerating between obstacles, or during full-power sprint efforts.

Benefits of Forging:

  • Superior stiffness
  • Maximum power transfer
  • Exceptional fatigue resistance
  • Increased impact resistance
  • Race-proven reliability

Technical Specifications

  • Lengths: 170 | 172.5 | 175 | 177.5 | 180 mm
  • Crank Arms: Forged and CNC-machined 7075-T6 aluminum
  • Spindle: 4130 CrMo – Ø24 mm
  • Interface: 40T spline
  • Chainring Mount: 4-bolt spider – 104 BCD
  • Q-Factor: 165 mm
  • Chainline: 43 mm

Weight

  • 730 g (175 mm configuration)

Designed For

  • Elite and professional BMX racers
  • Maximum power transfer
  • Ultimate structural stiffness
  • Explosive starts and instant acceleration
  • Riders seeking the most direct connection between rider and track
Additional information
Weight 0.800 kg
Dimensions 30 × 20 × 20 cm
size crankset

ULTIMATE 170 mm

,

ULTIMATE 172.5 mm

,

ULTIMATE 175 mm

,

ULTIMATE 177.5 mm

,

ULTIMATE 180 mm