DK Phase Bicycle Fork

Product Overview

The DK Phase Bicycle Fork is a precision-engineered freestyle and street fork built from post-weld heat-treated 4130 chromoly. The one-piece CNC-machined steerer tube with integrated bearing race delivers responsive handling and durability. Designed for trust and reliability, it combines strength with minimalist aesthetics and modern corrosion protection.

Key Features

• 100% post-weld heat-treated 4130 chromoly construction – Premium chromoly tubing with heat treatment applied after welding increases hardness and fatigue resistance throughout the fork. Superior to pre-weld treatment that loses strength at weld joints. Japanese-sourced tubing ensures quality and consistency.

• Butted and tapered tubing – Varying wall thickness optimizes strength-to-weight ratio. Thicker material in high-stress areas maintains rigidity; thinner sections reduce weight. Improves responsiveness and ride quality without sacrificing durability.

• CNC-machined 1-piece steerer tube – Precision-machined from solid material eliminates welds in the steering interface, improving strength and reducing play. Monolithic design ensures consistent quality and precise bearing seating.

• Integrated bearing race – Built-in lower race eliminates separate headset cups, simplifying assembly and reducing play. Works with integrated headset systems for sealed bearing compatibility.

• ED (electro-deposited) coating – Advanced rust and corrosion protection applied before final finish. ED coating penetrates into crevices and provides superior protection compared to paint or standard finishes. Maintains appearance and structural integrity in wet conditions.

• Internal threading – Head tube threading runs internally, protecting threads from corrosion and damage. Allows use of standard compression bolts without external hardware visibility.

• Aluminum dual wrench compression bolt – Lightweight compression bolt allows headset tension adjustment. Dual wrench design accommodates different tool preferences for fine-tuning bearing preload.

• Fluted, butted, and tapered legs – Multi-stage leg design optimizes stiffness and weight. Fluting (internal grooves) reduces material without sacrificing lateral strength. Butting varies wall thickness; tapering reduces diameter at dropouts.

• 4mm thick dropouts – Robust dropout construction with adequate thickness for secure axle clamping. Resists bending under load and provides reliable support for pegs and axles.

• 33mm offset – Moderate offset optimizes trail and handling for freestyle and street riding. Supports responsive steering and maneuverability without excessive geometry changes.

• 6.5" steerer tube length – Standard length accommodates typical BMX frame integration. Provides adequate extension for headset systems without excessive material.

• 320mm axle to crown height – Precise measurement ensures proper frame geometry and handling characteristics. Standard height maintains balanced steering feel for 20" wheel setups.

• 20" wheel size only – Purpose-built geometry specifically for 20" BMX wheels. Optimized proportions and angles suit standard 20" wheel diameter and frame sizing.

• 2 lbs total weight – Substantial fork weight reflects premium materials and precision construction. Adequate mass provides stable handling and responsive feel without excessive rotational inertia.

• Minimalist dropout design – Clean aesthetic without unnecessary features. Peg clearance consideration allows grinding use without interference.

Technical Specifications

• Material: 100% post-weld heat-treated 4130 chromoly (Japanese sourced)
• Steerer tube: CNC-machined 1-piece with integrated bearing race
• Steerer length: 6.5"
• Offset: 33mm
• Axle to crown height: 320mm
• Dropout thickness: 4mm
• Legs: Fluted, butted, and tapered
• Corrosion protection: ED (electro-deposited) coating
• Threading: Internal
• Compression bolt: Aluminum dual wrench
• Wheel size: 20" only
• Weight: 2 lbs
• Intended use: Freestyle and street BMX

Compatibility and Ideal Use Cases

Compatible with:

• BMX frames with integrated head tubes and 1-1/8" steerer compatibility
• Sealed and standard integrated headset systems
• 20" wheel builds with standard hub spacing
• All BMX drivetrain and brake systems
• Freestyle and street riding setups

Ideal for:

• Freestyle and street BMX riders seeking premium fork performance
• Riders prioritizing responsiveness and durability
• Wet climate and high-corrosion environments requiring ED protection
• Technical tricks and precision maneuvers benefiting from responsive geometry
• Any BMX discipline requiring reliable, precision-engineered fork components