Ikon Alloy 20" Rim 451×19.5 36h

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 rim weighs 262 grams and features an aero profile with angled spoke holes for improved wheel stiffness. Intended for disc brake or brakeless setups only—no braking surface is machined into the sidewalls.

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

• No brake surface – Sidewalls are not machined for rim brakes, reducing weight and eliminating unnecessary material for disc brake or brakeless applications

• 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: 13.5 mm
• Rim height: 16.3 mm
• Spoke holes: 36h
• Weight: 262 g (9.25 oz)
• ERD (Effective Rim Diameter): 434 mm
• Material: 6061-T6 aluminum
• Wall type: Double-wall with angled spoke holes
• Valve type: Presta
• Brake compatibility: Disc brake or brakeless only (no rim brake surface)
• 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 front or rear wheels on 20" BMX race bikes using disc brakes or brakeless hubs. The 36-hole drilling pairs with standard race hubs for strong wheel builds capable of handling gate starts and jump impacts. Best suited for competitive racing where weight savings and aerodynamics are prioritized and rim brakes are not used. 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 compatible with caliper or U-brakes—disc brake mount or brakeless hub required.

Note: Not compatible with rim brakes (V-brake, caliper, or U-brake). Tubeless conversion requires additional components sold separately.