Our site shows LIVE INVENTORY. If you can ADD TO CART, the item is IN STOCK.

United Supreme SU18 BMX Bike-Black/Red

Sold Out

About This Product: United Supreme SU18 BMX Bike-Black/Red


The United Supreme SU18 2013 is tailored to the smaller rider that is serious about progressing on a bike and having something that will hold up to their steep learning curve. This model rides like a scaled down 20″ with responsive pro level frame geometry, larger 7.25″ rise bars, shorter grips, lever and stem. Add in a Japanese cromo main frame, 100% cromo forks and a fully sealed rear cassette for a serious BMX bike.

Toptube Length: 18″
Chainstay Length: 12.45”
BB Height: 10.75”
Headtube Angle: 75°
Seattube Angle: 71°


Material:  4130 Japanese seamless cromo DT, TT & CS
Headtube: Integrated
Dropouts: 6mm thick, 14mm slots
Brake Mounts: Welded 990
Fork Legs: Tapered, 4130 cromo
Steerer   Integrated race, 4130 cromo
Fork Dropouts: 5mm thick cromo, machined holes, 10mm slots
Handlebars: 1020 hi ten H: 7.25 in x W: 26 in
Grips: United 120mm Jr w/nylon push in end
Headset: United sealed bearing integrated
Stem: United short alloy front load with forged detail
Lever: Alloy, junior reach
Brake: Tektro 990
Cranks: 3pc slimline heat treated tubular cromo, 8 spline, 152mm
BB: United sealed bearing mid
Sprocket: United design, 25t
Pedals: Junior size, nylon/fibreglass
Chain: Taya 410, Black
Rear Rim: Single wall 36h, alloy, colour anodized, wide profile
Front Rim: Single wall 36h, alloy, colour anodized, wide profile
Rear Hub: 36h, sealed bearing alloy cassette, 14mm axle
Driver: 9t, 3 pawl, sealed bearing, loud mechanism
Front Hub: 36h, looseball, 10mm axle
Rear Tire: Innova 18 x 2.1, 65 psi
Front Tire: Innova 18 x 2.1, 65 psi
Seat: United 2013 Jr size vinyl padded pivotal
Seat Post: Pivotal
Seat Clamp: Invest cast integrated with frame

Weight: 22.9 lbs

NOTE: As with any complete bike, J&R Bicycles recommends that you have a professional bicycle store build your bike. Bikes ordered through mail-order come partially assembled and need to be inspected and assembled by a bicycle mechanic. Failure to do so may void the manufacture's warranty. Manufacture's warranties differ for every brand. You can check the brand's website for warranty information.

Additional Information

Barcode 014057
Special Shipping Group N/A

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.

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.