Ripper Jr

The SE Bikes Ripper Jr 21″ is a high-performance BMX race bike designed for young riders seeking to excel on the track. Weighing just 16.2 pounds, it offers a lightweight and stiff aluminum frame, making it one of the fastest junior-sized race bikes available.

🚴‍♂️ Key Features & Specifications

• Frame: 6066 aluminum with floval tubing, bi-oval downtube, and rectangular rear stays for maximum stiffness.

• Fork: 6066 aluminum Landing Gear with an aluminum steerer tube.

• Crankset: 155mm 3-piece alloy cranks with a 38T alloy chainring.

• Pedals: Wellgo alloy caged pedals with Cr-Mo axles.

• Brakes: Promax P-1 6061-T6 alloy V-brake with blue pads and slick cable.

• Tires: Vee Tire Co Speed Booster 20″ x 1-1/8″ front and rear for quick cornering and low rolling resistance.

• Rims: Alienation Ankle Biter double-wall rims with sealed bearing hollow axle hubs and a 14T cassette.

• Handlebars: SE Mini Wing bar (21.5″ width, 5″ rise) with 11° backsweep and 5° upsweep.

• Stem: Promax Impact Mini 6061-T6 alloy CNC machined with a 40mm reach.

• Seat: SE Racing Mini seat with an integrated alloy post.

• Weight: 16.2 lbs (7.16 kg).

• Suggested Rider Size: Ages 9–12, approximately 4’3″ to 4’10” (130–148 cm).

📏 Geometry Overview

• Top Tube (Actual): 18.5″

• Seat Tube (Center to Top): 8.7″

• Seat Tube Angle: 70°

• Head Tube Angle: 73°

• Chainstay Length: 13.9″

• Wheelbase: 34.1″

• Bottom Bracket Height: 11″

• Standover Height: 21.8″SE BIKES Powered By BikeCo+1

💰 Pricing & Availability

• MSRP: $729.99 USD

• Discounted Price: $499.97 USD

🏁 Performance & Reviews

The Ripper Jr 21″ is praised for its lightweight design and stiffness, making it ideal for competitive BMX racing. One reviewer noted that their son, starting with limited experience, won 13 races in his first season after upgrading components like tires, pedals, and brake levers. This highlights the bike’s potential for performance enhancement with thoughtful upgrades.