451 - 20x1-1/8th and 20x1-3/8th Race Rims

The skinny wheels the kids ride, that's exactly the terminology we use when explaining what a 451 wheel is. Technically, and physically, the two tyre sizes familiar to any parent of a rider that is riding a expert (or smaller down to a mini) are 20 x 1-1/8th and 20 x 1-3/8th. Both of these tyres fit a rim that has a diameter of 451mm.

Where these rims/wheels differ is in their width, though even then there's really only a few millimetres difference in what some brands call their 20 x 1-1/8th rim, and their 20 x 1-3/8th rim.

The reality is that you can run both tyre sizes on any 451 rim, but you can't run anything from a 20 x 1.4 and up tyre as these typically (nearly exclusively) will fit a 406mm diameter rim. This is what we term here at LUXBMX a "pro" sized rims and you will see this rim/wheel size on BMX race bikes from pro up. (Though disclaimer, some expert XL complete bikes on the market also run this rim/wheel size)

Let's sum up then, this selection of rims here are 451mm in diameter and can vary in width between 15mm and 25mm, and they can be a 28 spoke hole rim, or 26 holes. The average width across our brands/products is approximately 19-22mm and our tip is that if you're building a wheel set, choose a rim that sits in this sweet spot, especially if your rider is on a mini and you plan on running this wheel set right through as they grow. You'll be able to move from the 1-18th tyres onto the 1-3/8th tyres no problem.

And of course, if you're still a little confused as to which rim will suit your wheel build, then Contact Us! After all, that's why we're here.

 

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Close-up of a Spectre V2 Carbon Fiber 451 28H Brakeless Rim, highlighting its subtle textured pattern with precision 4D drilled holes and a discreet logo. The Spectre V2 Carbon Fiber 451 28H Brakeless Rim, crafted from Toray T800 carbon fiber, features a textured surface in sleek black. The rim stands upright on a pristine white background, showcasing its precision design with 4D drilled holes for enhanced performance.
Spectre V2 Carbon Fiber 451 36H Brakeless Rim
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$399.99 AUD
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A Box Hex Lab Carbon Fibre Rim (451 - 20x1-1/8 and 20x1-3/8) on a white background, made of high modulus carbon fiber. The Box Hex Lab Carbon Fibre Rim (451 - 20x1-1/8 and 20x1-3/8), with a black logo on it, is perfect for the BMX race market.
brand undefined Box Hex Lab Carbon Fibre Rim (451 - 20x1-1/8 and 20x1-3/8)
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$599.99 AUD
The Spectre V3 Carbon Fiber 451 28H Brakeless Rim, featuring a unidirectional finish and textured surface, stands upright on a small angled base against a plain white background. A close-up of the Spectre V3 Carbon Fiber 451 28H Brakeless Rim, showcasing its textured, circular unidirectional finish against a white background.
Spectre V3 Carbon Fiber 451 28H Brakeless Rim
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$399.99 AUD
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The Excess XLC Aluminium 451mm Rim boasts a sleek black and white design, expertly crafted with double-walled 6061 T6 alloy for enhanced durability. Its anodised finish adds a touch of sophistication when viewed from the side against the white background. A black Excess XLC Aluminium 451mm rim, adorned with white graphics and viewed from the side, showcases its sleek aero rim profiles.
brand undefined Excess XLC Aluminium 451mm Rim
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$74.99 AUD

$99.99 AUD
Radio Clipper Junior Rim / Black / 20 X 1-1/8 - 1-3/8 / 28 Hole Radio Clipper Junior Rim / Cyan / 20 X 1-1/8 - 1-3/8 / 28 Hole
Radio Junior Clipper Rim (451 - 20x1-1/8)
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$99.99 AUD
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Stay Strong Carbon Rim 451 (28H) / Matte Black / 20 x 1-3/8 / Front Stay Strong Carbon Rim 451 (28H) / Matte Black / 20 x 1-3/8 / Rear
Stay Strong Carbon Rim 451/ Matte Black / 28H
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$598.99 AUD
The Spectre V3 Carbon Fiber 451 28H Brakeless Rim, featuring a unidirectional finish and textured surface, stands upright on a small angled base against a plain white background. Close-up of the Spectre V3 Carbon Fiber 451 28H Brakeless Rim, featuring a lightweight unidirectional carbon finish and "spectre" printed in a metallic style.
Spectre V3 Carbon Fiber 451 36H Brakeless Rim
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$399.99 AUD
A Michram OWT 451mm Carbon Rim Plain Logo (36 Hole) is shown from the front against a white background. A Michram OWT 451mm Carbon Rim Plain Logo (36 Hole) in black carbon fibre, photographed on a white background and viewed from directly above.
Michram OWT 451mm Carbon Rim Plain Logo (36 Hole)
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$499.99 AUD
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Explore the Pride Carbon Gravity EXP Aero Rim 28H UD (451mm), a black and white rim with "PRIDE" branding, designed for BMX racing. These carbon rims combine sleek aerodynamic design with seamless performance and style.
Pride Carbon Gravity EXP Aero Rim 28H UD (451mm) - Non Braking
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$699.99 AUD
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A single black Answer BMX Carbon Rim (451 - 20x1-1/8) isolated on a white background, featuring engraved brand details. A black Answer BMX Carbon Rim (451 - 20x1-1/8) bicycle rim isolated on a white background, displaying the brand name etched on the side.
brand undefined Answer BMX Carbon Rim (451 - 20x1-1/8)

$694.99 AUD

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$698.99 AUD
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The Answer Pinnacle Mini Rim (451 - 20x1-1/8), featuring a sleek, sleeved joint and bold white text, is displayed against a pristine white background, highlighting its robust double-wall construction. The Answer Pinnacle Mini Rim (451 - 20x1-1/8) is a blue BMX rim showcasing white text along the outer edge, crafted with double-wall construction for enhanced durability, displayed on a plain white background.
brand undefined Answer Pinnacle Mini Rim (451 - 20x1-1/8)

$124.99 AUD

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$128.99 AUD
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Alienation Ankle Biter Rim 20in (451x15) / Blue / 36H
brand undefined Alienation Ankle Biter Rim 20in (451x15)

$79.99 AUD

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$89.99 AUD