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Diamondback JR VIPER B20

Diamondback JR VIPER B20
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Please call (716) 646-0028 for availability.


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
Rims 36h aluminum, 30mm wide, ano black
Hubs FRONT HUB 36h steel shell w/ 3/8" axle; REAR HUB 36h steel shell w/ coaster brake, 3/8" axle
Spokes 14g
Tires Comp III style 20x2.125"
Crankset 140mm steel 1-piece
Bottom Bracket Loose ball
Chain KMC Z410 1/2 x 1/8
Rear Cogs 18t cog
Handlebars Hi-ten steel 2-piece 24" wide x 6" rise
Tape/Grips DB Icon Grip w/ Nylon End Plug
Stem 1" quill steel base w/ alloy clamp
Brake Levers Rush RX2.1
Brakes Rush linear rear w/ coaster hub
Pedals Resin platform
Saddle DB BMX padded
Seat Post Steel pillar
Color(s) Blue and Yellow

* Subject to change without notice.