Insight Squared Axle Crank Arms

Insight Squared Axle Crank Arms

The Insight Squared Axle Crank Arms are forged aluminum arms designed for square taper bottom bracket systems. Built with a 110mm BCD (bolt circle diameter) five-bolt chainring interface, these arms provide compatibility with a wide range of sprocket options for BMX racing and freestyle setups. Forged construction delivers strength and stiffness while maintaining a reasonable weight of 470 grams for the pair.

Key Features

• Forged aluminum construction – Forging process aligns the aluminum grain structure for increased strength compared to cast cranks, improving durability under high pedaling loads
• Square taper interface – Compatible with traditional square spindle bottom brackets, a proven standard that's widely available and cost-effective
• 110mm BCD, 5-bolt pattern – Standard bolt circle diameter accepts most BMX sprockets with 5-bolt mounting, providing flexibility in tooth count and sprocket selection
• 470-gram weight – Reasonable weight for forged aluminum arms balances strength with performance considerations
• Crank arms only – Sold without bottom bracket, allowing riders to choose their preferred BB quality and spindle length

Technical Specifications

• Model: Insight Squared Axle Crank Arms
• Material: Forged aluminum alloy
• Bottom bracket type: Square taper
• BCD (Bolt Circle Diameter): 110mm
• Chainring mounting: 5-bolt pattern
• Weight: 470 grams (pair, arms only)
• Included: Crank arms, chainring bolts (verify)
• Not included: Bottom bracket, spindle
• Crank length: Not specified (verify available lengths—typically 165mm, 170mm, 175mm)

Compatibility and Ideal Use Cases

These crank arms fit frames with 68mm bottom bracket shells that accommodate square taper bottom brackets. You must purchase a compatible square spindle bottom bracket separately—ensure the spindle length matches your frame's chainline requirements (typically 113mm-122mm for BMX). The 110mm BCD fits most BMX sprockets with 5-bolt patterns; verify your sprocket's BCD before installation. Suitable for riders building or upgrading bikes with square taper systems, common on mid-level BMX racing and freestyle setups. Forged aluminum construction makes these appropriate for riders who need durability beyond entry-level cast cranks but don't require the weight savings or stiffness of chromoly three-piece systems. Works across racing, street, and park applications where square taper compatibility is needed.