Ikon Alloy 20" Rim 451×19.5 28h 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 28-hole rear rim weighs 283 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

• 28-hole drilling – Reduced spoke count lowers wheel weight while maintaining adequate strength for lighter riders or those prioritizing minimal rotational mass

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: 28h
• Weight: 283 g (10 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 28-hole drilling pairs with lightweight cassette or freewheel race hubs for reduced rotational weight while maintaining adequate strength for Mini, Junior, and lighter Expert class riders. Best suited for competitive racing where weight savings are prioritized and riders are within appropriate weight limits for 28-hole wheel builds. 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 or heavier riders who may benefit from 36-hole wheels—brake surface adds weight unnecessary for disc applications.

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