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GT Slammer Kachinsky 20"TT BMX Freestyle Bike-Red - 1
GT Slammer Kachinsky 20"TT BMX Freestyle Bike-Red - 2
GT Slammer Kachinsky 20"TT BMX Freestyle Bike-Red - 3

GT Slammer Kachinsky 20"TT BMX Freestyle Bike-Red

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About This Product: GT Slammer Kachinsky 20"TT BMX Freestyle Bike-Red

The GT Slammer Kachinsky 20inTT BMX Bike-Red is a great budget-friendly first bike for young riders looking to cruise the neighborhood or hit the skateparks. Crafted with thoughtful geometry that allows for smooth and responsive handling, this intro bike helps younger BMXers stay stable and focus on having fun while they build their strength. The Slammer is also built to handle the learning process with a frame and fork made from 100% Hi-Ten steel and the big soft GT NBS 2.4" tires can handle all sorts of impact and allow for a nice smooth ride.


  • FRAME: 100% Hi-Ten Steel Tubes, DT Gusset, American BB, Seat Stay U-Brake, External 1-1/8" H/T, Removable Rotor Tabs
  • FORK: 100% Hi-Ten, Tapered Legs, 31mm Offset
  • CRANK: GT Power Series 3pc Chromoly 170mm, 19mm x 8T Spindle, GT NBS 25T Steel Chainwheel
  • BOTTOM BRACKET: American Loose Ball Bearing
  • PEDALS: GT Logo PC Platform
  • COG SET: 9T 1pc. Driver
  • RIMS: Alloy Single Wall, 36h
  • TIRES: GT NBS 2.4"
  • FRONT HUB: Steel Loose Ball 3/8" Axle
  • REAR HUB: Alloy Semi-Sealed 14mm Cassette
  • SPOKES: Stainless Steel, 14g
  • BRAKES: NBS Alloy U-Brake w/ Soft Compound Pad
  • HANDLEBAR: GT 2pc Freestyle, 100% Hi-Ten Steel, 8.5"H x 29"W, 3°Up, 11° Back
  • STEM: GT NBS Top Load 40mm, 32mm Rise
  • GRIPS: GT Super Soft Flangeless
  • HEADSET: 1-1/8" Threadless, Steel
  • SADDLE: Railed Saddle
  • SEAT POST: Alloy, 25.4mm x 200mm


  • Seat Tube Length: 9.06
  • Top Tube Actual: 20
  • Head Tube Angle: 75°
  • Seat Tube Angle: 71°
  • Head Tube Length: 4
  • Wheelbase: 34.8
  • Front Center: 21.85
  • Chain Stay Length: 13.19
  • BB Drop: -1.57
  • BB Height: 11.57
  • Fork Rake: 1.2
  • Seat Post Diameter: 25.4mm
  • Axle To Crown: 12.6

Complete Bike specifications and components may differ from photos and description. Manufacturers reserve the right to make changes and/or substitutions due to parts availability, production requirements and ongoing development decisions.

Freestyle Bikes Sizing Guide

Freestyle Bikes Sizing Guide
Rider Height Wheel Size TT Size
Rider Height: 6'+ Wheel Size: 20", 22", 26" TT Size: 21" - 23"
Rider Height: 5'6" - 6' Wheel Size: 20", 22" 26" TT Size: 20.25" - 23"
Rider Height: 5' - 5'8" Wheel Size: 20", 22", 26" TT Size: 20" - 23"
Rider Height: 4' - 5'4" Wheel Size: 18", 20" TT Size: 18" - 20.5"
Rider Height: 3'6" - 4'6" Wheel Size: 18" TT Size: 18"
Rider Height: 3' - 3'8" Wheel Size: 14", 16" TT Size: 14.25" - 16.25"
Rider Height: 2'8" - 3'4" Wheel Size: 12", 14" TT Size: 13" - 14.25"
Rider Height: 2' - 3' Wheel Size: 12" TT Size: 12" - 13"

Need Some help Choosing a BMX Bike?

Selecting the right size BMX bike is vital for a smooth and delightful ride. At J&R Bicycles, we understand the BMX world inside out because we're passionate riders ourselves. Just reach out to us, and we'll be more than happy to assist you on your journey to finding the perfect BMX bike.

Curious to learn more? We've compiled a comprehensive BMX buyer's guide to demystify the process. Read on, and together, we'll uncover the BMX bike that perfectly matches your riding style and preferences.