DK Flux LX BMX Bike (21.25" Toptube) (Purple)

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DK Flux LX BMX Bike (21.25" Toptube) (Purple)
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Price: $999.99 (Save 15%)
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DK Flux LX BMX Bike Description:

Built with the serious trail rider in mind, the DK Flux LX 20” delivers a dialed, pro-level setup straight out of the box. At its core is a 100% Chromoly frame with double-butted and tapered tubing with an offset Eclipse downtube, engineered for optimal strength without unnecessary weight. The 5" CNC-machined head tube and dropouts reinforce durability where it counts. The build is loaded with DK aftermarket components, including the responsive Phase fork and bars, Social 3-piece cranks, and the precision-cut Chamberlain topload stem. Whether you're carving deep in the trails or flowing through a jump line, every detail is geared for stability, strength, and control. Fully sealed bearings throughout, headset, hubs, and bottom bracket, keeps things smooth and low-maintenance. Double-wall rims paired with high-pressure Arison tires grip and roll with confidence, while removable chainstay U-brake mounts add versatility for riders who prefer a clean frame. With geometry tailored for trail-style riding and a clean choice of colors, Purple or Stone, the DK Flux LX bridges custom build quality and complete bike convenience.


Specifications:

  • Frame: 100% Full Chromoly, Double Butted and Tapered Tubes, CNC machined dropouts and 5" head tube (21.25" Toptube)   
  • Fork: DK Phase 100% Full Chromoly w/ 1-piece CNC steerer tube, butted and tapered legs, internally threaded pre-load bolt
  • Headset: Sealed Integrated (1-1/8") 
  • Stem: DK Chamberlain CNC top load (53mm reach)
  • Bars: DK Phase 100% Full Chromoly 11 butted w/ hourglass cross bar (9” Rise, 4°Up, 11°Back)
  • Grips: Duo flange w/press in bar ends
  • Cranks: DK Social 3-piece Tubular Chromoly, 48 spline (170mm)
  • Bottom Bracket: Sealed Mid (19mm)
  • Pedals: DUO Brand Resi-lite Platform (9/16")
  • Sprocket: DK CNC 6061 Aluminum (28T)
  • Chain: KMC
  • Front Hub: Sealed Alloy (Female 3/8" Axle)   
  • Rear Hub: Sealed Alloy Cassette (14mm Axle)  
  • Driver: 10 Tooth 
  • Front Rim: Alloy (Double Wall) (36 Hole) (36mm Width)
  • Rear Rim: Alloy (Double Wall) (36 Hole) (36mm Width)
  • Front Tire: Arison XLR8 (20 x 2.2”) (110 psi)
  • Rear Tire: Arison XLR8 (20 x 2.2”) (110 psi)
  • Seat: DK Phase 1-pc Seat (Combo)
  • Seat Post: Alloy Combo (25.4mm)
  • Seat Clamp: Integrated
  • Brake Lever: Alloy, 2-finger Design
  • Brakes: Alloy U-Brake 
  • Gyro: Not Drilled
  • Gyro Tabs: -
  • Brake Mounts: Removable Chainstay Mounts
  • Extras: Integrated Chain Tensioners
  • Color: Purple
  • Weight: -

Geometry:

  • Toptube Length: 21.25"
  • Chainstay Length: 13.74” Slammed
  • Headtube Angle: 74°
  • Seattube Angle: 71°
  • Bottom Bracket Height: 11.29"
  • Standover: 8.85”
  • Recommended Sizing Guide: 6' - 6.4"

For assistance building your new bike, please check out our tech help section here for instructions and tips on how to build your bike to ensure it is safe.

Dan's Comp recommends riding with a helmet to protect that brain. Shop our selection of freestyle helmets here.

Need help finding the right bike for you? Not sure what size would suit you best? Check out our BMX buyers guide video below!

Note: To ensure that every component on your bicycle is working properly, Dan's Comp recommends that all bikes be assembled by a qualified mechanic. Improper assembly of your bicycle may lead to premature wear or failure of individual components such as headsets, crank assembly and wheels. Failure to do so may void the manufacturer warranty.

This product was added to our catalog on August 15, 2025

Complete Bike Assembly Instructions (pdf)

How To Build A Complete Bike