Pack 5 Chainring Bolts Insight 8.5x4mm Alu

Product Overview

The Insight Chainring Bolts are aluminum replacement hardware for securing chainrings to BMX cranks. Each pack includes five bolt and nut sets designed to fit standard 4-bolt and 5-bolt chainring configurations. Manufactured from aluminum alloy, these bolts provide a lightweight alternative to steel hardware while maintaining the strength needed for BMX racing and riding.

Key Features

• Aluminum Alloy Construction – Lightweight material reduces overall drivetrain weight compared to steel chainring bolts
• Universal 4-Bolt and 5-Bolt Compatibility – Works with most standard chainring mounting patterns found on BMX cranks
• Durable Design – Built to withstand repeated pedaling forces and impacts from racing and aggressive riding
• 9 Color Options – Multiple anodized color choices allow color-matching with bike builds or personal preference
• Complete Hardware Set – Each pack includes both bolts (8.5mm) and nuts (4mm) for complete chainring installation

Technical Specifications

• Material: Aluminum alloy (anodized)
• Bolt Length: 8.5mm
• Nut Thickness: 4mm
• Quantity: 5 bolts and 5 nuts per pack
• Weight: 9g / 0.31oz per pack (5 sets)
• Color Options: 9 anodized colors available
• Compatibility: Most 4-bolt and 5-bolt chainrings

Compatibility and Ideal Use Cases

Compatibility Requirements: Fits standard 4-bolt and 5-bolt chainring configurations commonly found on BMX cranks. The 8.5mm bolt length and 4mm nut thickness work with most chainring and spider arm combinations. Verify your chainring requires this bolt size before purchasing—some cranks use proprietary or different-sized hardware.

Ideal for riders looking to reduce drivetrain weight through aluminum hardware or add color customization to their bike build. The 9 color options allow matching or contrasting with frame, crank, or other component colors. Suitable for BMX racing, street, park, and trail riding where weight savings matter and the hardware is not subjected to extreme torque loads that might strip aluminum threads. Best for riders who perform regular maintenance and properly torque chainring bolts to manufacturer specifications, as aluminum hardware requires more careful installation than steel to avoid cross-threading or stripping.