PACK CHAINRING BOLTS ELEVN 8.5X4MM ALLOY DOUBLE CLAMPING

Product Overview

The Elevn Alloy Chainring Bolt Pack is a set of CNC-machined aluminum chainring bolts designed for BMX cranks. Machined from 7075-T6 aluminum with an 8.5mm bolt length and 4mm thread engagement, these bolts feature hex sockets on both the bolt head and nut for simplified installation. The dual hex design allows tightening from either side, making chainring installation easier.

Key Features

• 7075-T6 aluminum construction – High-strength heat-treated aluminum alloy provides durability at reduced weight compared to steel bolts
• Double hex design – Hex sockets on both bolt head and nut allow tightening from either side, simplifying installation and removal
• 8.5mm bolt length with 4mm thread – Length accommodates thicker modern four-bolt chainrings and standard five-bolt chainrings
• Laser-etched logos – Permanent laser-etched Elevn branding won't fade or peel over time
• Vacuum-finished – Specialized finishing process ensures clean, precise tolerances

Technical Specifications

• Material: 7075-T6 aluminum alloy, CNC-machined
• Bolt length: 8.5mm
• Thread engagement: 4mm
• Hex sockets: Dual (both bolt head and nut)
• Kit contents: 5-pack (standard for most BMX chainrings)
• Finish: Anodized with laser-etched logos
• Compatibility: Four-bolt and five-bolt chainrings

Compatibility and Ideal Use Cases

This kit fits both four-bolt and five-bolt chainring patterns—the most common configurations for BMX cranks. The 8.5mm bolt length with 4mm thread engagement accommodates thicker modern four-bolt chainrings as well as standard five-bolt chainrings. Verify your chainring bolt pattern (four or five bolts) and measure the total stack thickness (chainring + spider or crank arm) to ensure proper fit before ordering.

Best suited for BMX riders who want lightweight chainring bolts with simplified installation. The double hex design eliminates the need to hold one side with a tool while tightening the other—both the bolt and nut have hex sockets, allowing you to tighten from whichever side is more accessible. This is particularly useful on cranks with limited wrench clearance or when working in tight spaces. The 7075-T6 aluminum construction reduces rotational weight compared to steel bolts. Important: Aluminum bolts require careful installation—use appropriate torque and avoid overtightening, as aluminum threads can strip more easily than steel. Apply anti-seize compound to threads during installation to prevent galling. Check bolt tightness periodically, especially after initial installation. Ideal for racing applications where weight savings matter, or for riders who prioritize ease of maintenance and visual customization. Not recommended for riders who frequently remove and reinstall chainrings, as repeated tightening can wear aluminum threads—steel bolts offer better durability for frequent maintenance.