Insight Bottom Bracket Euro Square

Overview

The Insight Euro Square is a sealed bottom bracket designed for BMX racing bikes with square-taper crank compatibility. Available in 113mm or 118mm widths with sealed bearings, this component delivers reliable crank support and smooth rotation for racing and high-performance riding.

Key Features

• Square-Taper Design — Standard square interface accepts all square-taper cranksets; proven geometry ensures reliable crank engagement and power transfer
• Sealed Bearing System — Protected bearings prevent dirt and moisture infiltration; extends component life and reduces maintenance in wet and dusty racing conditions
• Dual Width Options — Available in 113mm or 118mm widths to accommodate different frame bottom bracket shell dimensions; allows proper crank positioning and chainring alignment
• 34.5mm Outside Diameter — Standard sizing ensures compatibility with most BMX racing frames and square-taper cranksets
• Racing-Focused Design — Engineered for the demands of BMX racing where reliability and consistent performance are critical
• Lightweight Construction — 330g total weight (118mm with screws) keeps drivetrain mass reasonable while maintaining durability

Technical Specifications

• Type: Square-taper (Euro square)
• Width options: 113mm or 118mm
• Outside diameter: 34.5mm
• Bearing system: Sealed bearings
• Weight: 330g (118mm width with screws)
• Application: BMX racing

Compatibility & Ideal Use Cases

Compatible with all BMX racing frames and square-taper cranksets. Measure your bottom bracket axle length to determine whether 113mm or 118mm width is required; incorrect width selection will result in improper crank positioning and alignment issues. The sealed bearing system makes this component ideal for BMX racers and riders in wet or dusty conditions seeking reliable, low-maintenance performance. Essential for racing applications where consistent crank support and smooth rotation directly affect performance. Well-suited for riders prioritizing durability and dependable operation over premium materials or oversized technology.

Width 113 or 118mm ?
Measure the bottom bracket axis you wish to replace.
L = length of the bottom bracket axle.