Ikon Alloy 20" Rim 451×19.5 36h With Brake Surface

Product Overview

The Ikon UltraLite is a lightweight double-wall rim designed for 20" BMX race wheels. CNC-machined from 6061-T6 aluminum with optimized internal geometry, this 36-hole rear rim weighs 285 grams and features an aero profile with angled spoke holes for improved wheel stiffness. Includes CNC-machined brake surface for caliper or U-brake compatibility.

Key Features

• 6061-T6 aluminum construction – Heat-treated aluminum alloy with optimized internal geometry removes excess material while maintaining impact resistance and lateral stiffness

• Low-profile aero shape – Streamlined 16.3mm rim height reduces aerodynamic drag and weight while providing sufficient strength for race applications

• Angled spoke holes – Slightly inclined nipple holes create a more direct spoke angle to the hub flange, improving spoke tension distribution and reducing stress at the spoke bed

• CNC-machined brake surface – Precision-machined sidewalls provide consistent braking performance with caliper or U-brake systems

• Tubeless-ready bead lock system – Integrated bead lock shelf secures tubeless tire beads without additional rim strips when using tubeless-specific tires, sealant, valves, and rim tape

• Double-polished anodized finish – Black anodized surface with water-transfer graphics provides corrosion resistance and visual customization in four color options

Technical Specifications

• Rim size: 20" × 1 1/8" to 1 3/8" (451mm BSD)
• External width: 19.5 mm
• Internal width: 14.6 mm (rear spec)
• Rim height: 16.3 mm
• Spoke holes: 36h
• Weight: 285 g (10.05 oz)
• ERD (Effective Rim Diameter): 434 mm
• Material: 6061-T6 aluminum
• Wall type: Double-wall with angled spoke holes
• Valve type: Presta
• Brake compatibility: Rear wheel with machined brake surface (V-brake, caliper, U-brake)
• Finish: Double-polished black anodized with water-transfer graphics
• Graphic color options: White, Blue, Red, Neon Yellow
• Max pressure: 110 PSI (7.58 bar)
• Max spoke tension: 115 kgf
• Tubeless system: Bead lock compatible (requires tubeless valve, sealant, rim tape)

Compatibility and Ideal Use Cases

Designed for rear wheels on 20" BMX race bikes using rim brakes (V-brake, caliper, or U-brake). The 36-hole drilling pairs with standard cassette or freewheel race hubs for strong wheel builds capable of handling gate starts and jump impacts. Best suited for competitive racing where weight savings, aerodynamics, and reliable braking are all required. 451mm BSD fits standard 20" × 1 1/8" to 1 3/8" race tires. Tubeless setup requires additional components: tubeless-specific tire, Presta valve, rim tape, and liquid sealant (all sold separately). Not recommended for disc brake setups—brake surface adds weight unnecessary for disc applications.

Note: Tubeless conversion requires additional components sold separately: tubeless valve, sealant, and rim tape.