Jr Viper 20

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For smaller BMXers learning to ride.
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Jr Viper 20

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 4-9 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"
Brakes Rush linear rear w/ coaster hub
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
Bike Size Boys/20" Age 4-9 Rider Height: 44"-54"
Seat Tube Length 250.0mm
Stand Over Height 505.0mm
Top Tube Length 485.0mm
Stack 658.0mm
Reach 365.0mm
Head Tube Length 100.0mm
Head Angle 73.0mm
Seat Angle 69.0mm
Wheel Base 886.0mm
Chain Stay Length 362.0mm
Fork Offset 35.0mm
BB Drop -1.0mm
Stem Length
Handlebar Width
Crank Length
Seat Post Length

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