Pride Racing Newton Sx 2-Piece BMX Race Cranks-Black

Pride Racing Newton SX 2-Piece BMX Race Cranks – Black

The Pride Racing Newton SX crankset is engineered for elite BMX racing with Finite Element Analysis (FEA) optimization and 7000-series forged aluminum construction. Featuring a 24mm heat-treated chromoly spindle and compatibility with both BB86 and BSA bottom brackets, this crankset delivers extreme stiffness and explosive power transfer at 738 grams. Designed for racers who demand the strength and efficiency needed for competitive gate starts and sprint finishes.

Key Features

• 7000-Series Forged and Machined Aluminum Arms – Premium 7000-series alloy provides higher strength than standard 6000-series aluminum; forging process compresses grain structure for improved fatigue resistance and stiffness
• FEA-Optimized Design – Finite Element Analysis determines optimal material placement, removing weight from low-stress areas while reinforcing high-load zones for maximum stiffness-to-weight ratio
• 24mm Heat-Treated Chromoly Spindle – Oversized 24mm spindle provides increased torsional stiffness compared to 19mm or 22mm spindles; chromoly steel construction ensures strength for explosive pedaling forces
• Dual Bottom Bracket Compatibility (BB86 / BSA 68/73mm) – Works with both press-fit BB86 and threaded BSA bottom brackets, providing flexibility across different frame standards
• 43.5mm Chainline – Race-specific chainline optimizes drivetrain efficiency and chain alignment for straight chainline and reduced friction
• 168mm Q-Factor – Narrow stance positions feet closer to the bike's centerline for improved power transfer and aerodynamics
• 104mm BCD 4-Bolt Chainring Mount – Standard 104mm bolt circle diameter accepts a wide range of aftermarket chainrings; 4-bolt pattern provides secure mounting
• Chainring Bolts Included – All necessary hardware for chainring installation comes in the box

Technical Specifications

• Crank Arms: 7000-series aluminum, forged and machined
• Spindle: 24mm heat-treated chromoly steel
• Bottom Bracket Compatibility: BB86, BSA 68mm, BSA 73mm
• Chainline: 43.5mm
• Q-Factor: 168mm
• Chainring Mount BCD: 104mm (4-bolt)
• Arm Length: 175mm (weight specification based on this length)
• Weight: 738g (175mm arms, without chainring)
• Included: Chainring bolts
• Color: Black

Compatibility and Ideal Use Cases

This crankset fits frames with BB86 press-fit or BSA threaded bottom brackets (68mm or 73mm shell width) and requires a separate bottom bracket (not included). The 104mm BCD 4-bolt chainring mount accepts standard BMX race chainrings (chainring sold separately). Best suited for elite-level BMX racers who demand maximum stiffness and power transfer for explosive gate starts and sprint finishes. The FEA-optimized design and 7000-series aluminum make this crankset appropriate for riders who want the lightest, stiffest option without compromising durability. The 24mm spindle provides increased torsional rigidity compared to smaller spindle sizes, reducing flex during hard pedaling efforts. The narrow 168mm Q-factor improves pedaling efficiency and aerodynamics. Ideal for competitive racers building high-performance setups where every watt of power and every gram of weight matters. Not the most budget-friendly option, but the engineering and materials justify the investment for serious racers.