DK Phase Bicycle Frame

Product Overview

The DK Phase is a freestyle-focused BMX frame built from Japanese 4130 chromoly tubing with geometry optimized for all-around performance. Designed by and for the DK freestyle squad, the Phase delivers stable control whether riding vert, street, or technical ledges. Premium materials and refined tube construction create a frame that balances responsiveness with structural integrity.

Key Features

• 100% Japanese 4130 chromoly tubing (butted, tapered, heat-treated) – Premium chromoly alloy provides superior strength-to-weight ratio compared to standard steel. Butting (varying wall thickness) reduces weight in low-stress areas while maintaining full thickness where needed. Tapered tubes (thinner at joints, thicker in the middle) improve ride quality and durability. Heat treatment increases hardness and fatigue resistance.

• "Eclipse" offset down tube wall design – Proprietary asymmetrical wall thickness (thin at top, thick at bottom) saves weight while maintaining bending strength. The offset design optimizes tube performance without adding material, improving pedal efficiency and maneuverability.

• Integrated chain tensioners – Built-in tensioning points eliminate the need for external adjusters, creating a cleaner frame and reducing maintenance complexity. Maintains consistent chain tension across different setups.

• Low-profile integrated seat post clamp – Minimalist design accepts standard 25.4mm seat posts without added bulk. Low profile improves ground clearance during tricks and reduces frame profile for better visibility and control.

• Tapered seat stay and chain stay tubes – Strategic tapering in these high-stress areas improves shock absorption and lateral stiffness without excess weight. Enhances frame responsiveness during technical tricks.

• Removable seat stay brake mounts – Allows riders to remove brake hardware when not needed, simplifying the frame for street or park setups. Mount points can be reinstalled when brakes are required.

• Removable cable guide and gyro tabs – Flexibility for different brake and gyro setups without frame modifications. Tabs can be detached for minimal profile or installed as needed.

• Mid bottom bracket shell – Standard BMX BB height positioning (1.25" above axle line) maintains proven geometry for balance and trick progression. Accepts standard mid-BB cranksets.

• CNC-machined head tube artwork – Precision-cut graphics improve durability and aesthetic quality compared to decals. Built into the tube rather than applied afterward.

• Integrated head tube – Seamless construction with tapered geometry for improved handling and reduced weight compared to traditional slip-fit designs.

• Included Velcro brake cable strap – Factory-included cable management accessory reduces setup time and keeps cables organized.

Technical Specifications

• Material: 100% Japanese 4130 chromoly (butted, tapered, heat-treated)
• Top tube length options: 20.6", 20.8", or 21"
• Chain stay length: 13.25"
• Head tube angle: 75.2°
• Seat tube angle: 71°
• Bottom bracket height: +1.25" above axle line
• Bottom bracket drop: -1.25" (-32mm)
• Bottom bracket type: Mid
• Seat post clamp: Integrated, accepts 25.4mm seat post
• Weight: 4 lbs 8 oz (frame only) / 4 lbs 9.6 oz (with all hardware)
• Special features: Eclipse offset down tube, integrated chain tensioners, removable brake mounts, removable gyro tabs, CNC head tube artwork
• Included accessories: Velcro brake cable strap

Compatibility and Ideal Use Cases

Compatible with:

• Mid bottom bracket (mid-BB) cranksets
• 25.4mm seat posts
• Standard BMX headsets (1-1/8" steerer)
• Freestyle brake systems (removable mounts)
• Standard gyro systems (removable tabs)
• 13.25" chain stays (verify parts clearance)

Ideal for:

• Freestyle and all-around BMX riders
• Street, park, and vert discipline combinations
• Riders seeking premium materials and refined geometry
• Builders prioritizing responsive, balanced frame performance
• Any rider requiring proven, versatile BMX geometry