Jr Viper 20

reg $180.00 $90.00 save $90.00 50% off
Assembly Options Professionally assembled by your local dealer, or DIY the assembly - its up to you!
Financing Available Buy Now, Pay Later with Klarna. We’ve partnered with Klarna to offer flexible payment options to pay over time.
30 Day Returns Our love your ride guarantee – if you’re not 100% happy with your bike, we’re not happy either. Click here for more details
Frame Warranty Covered for at least 5 years! Check out the details to see if your bike qualifies for longer.

For kids making the jump from a push-bike to a “big kid” bike, the Jr Viper fits the bill. This bike has all the features you’d expect in a BMX bike, like a bomber steel frame and fork, sturdy wheels, and beefy tires. Then we added a few extras to help smaller riders enjoy neighborhood jaunts even more: a chain guard to protect skin and clothing, a rear hand brake plus a coaster brake to help ease the transition to braking with their hands, plus super short 140mm cranks sized just right for kids. This model fits riders 44”-54” tall, aged approximately 5-9 years old.

  • Frame Hi-Ten steel
  • Fork Hi-Ten steel
  • Headset 1" threaded
  • Cranks 140mm steel 1-piece
  • Sprocket 36t steel
  • Bottom Bracket Loose ball
  • Cogset 18t cog
  • Chain KMC Z410 1/2 x 1/8
  • Front Hub 36h steel shell w/ 3/8" axle
  • Rear Hub 36h steel shell w/ coaster brake, 3/8" axle
  • Spokes 14g
  • Rims 36h aluminum, 30mm wide, ano black
  • Tires Comp III style 20x2.125"
  • Brake Levers Rush RX2.1
  • Pedals Resin platform
  • Handlebar Hi-ten steel 2-piece 24" wide x 6" rise
  • Grips DB Icon Grip w/ Nylon End Plug
  • Stem 1" quill steel base w/ alloy clamp
  • Seat DB BMX padded
  • Seatpost Steel pillar
  • Extras Owner's Manual, Tool Kit,
  • Brakes Rush linear rear w/ coaster hub
  • Product ID 3652

* Specifications are subject to change without notice

Frame Size Boys/20"
Rider Height -
Bike Stand Over Height 505.0 mm
Bike Seat Tube Length 250.0 mm
Bike Top Tube Length 485.0 mm
Bike Head Tube Length 100.0 mm
Bike Head Angle 73.0 °
Bike Seat Angle 69.0 °
Bike Wheel Base 886.0 mm
Bike Chain Stay Length 362.0 mm
Bike Fork Offset 35.0 mm
Bike Bb Height 255.0 mm
Bike Stack 658.0 mm
Bike Reach 365.0 mm
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