The best 20-inch BMX mag wheels depend on whether you need a complete wheelset, a replacement front or rear wheel, or a distinctive five-spoke design. The Skyway Tuff II is best for riders seeking a recognized BMX-style front-and-rear set, while the separate plastic front and rear wheels suit targeted replacements. The magnesium set and MEGHNA wheelset offer different one-piece or integrated designs, but their spacing and hub details should be checked carefully against your bike before buying.
| Product | Best For | Key Detail |
|---|---|---|
| Skyway Tuff II | Front-and-rear replacement | 5-spoke set; 100 mm front, 110 mm rear |
| Black 6-Spoke Rear Wheel | Rear coaster-brake replacement | Single-speed coaster hub |
| 20-Inch Magnesium Rim Set | Buyers comparing a one-piece set | Listed 100 mm front, 135 mm rear spacing |
| Black 6-Spoke Front Wheel | Front-wheel replacement | 3/8-inch axle |
| MEGHNA 5-Spoke Wheelset | Riders wanting an integrated wheelset | For 20 x 1.75–2.125-inch tires |
Skyway Tuff II 20-Inch Five-Spoke Wheelset
The Skyway Tuff II is a front-and-rear 20-inch wheelset with a five-spoke design. Its listed specifications are 406 mm wheel size, bolt-on installation, 100 mm front spacing, and 110 mm rear spacing. The product description identifies a BMX cassette rear wheel and says the wheels accommodate pneumatic or non-pneumatic tires.
Best for: BMX owners seeking a matched front and rear set with traditional Tuff styling. It stands out because its listed front and rear spacing is clearly stated, making it easier to compare with a bike’s fork and frame measurements. Check before buying: Confirm the cassette, axle, and spacing requirements for your specific bike; the product information does not establish universal compatibility.
Black Six-Spoke Rear Coaster Wheel
This 20-inch black rear wheel has a six-spoke BMX-style plastic design and a single-speed coaster hub. The listed axle is 3/8 inch, and the wheel’s outside width is 38 mm. Because it is a rear wheel with a coaster hub, it is a more specific replacement option than a front-and-rear wheelset.
Best for: Riders replacing a compatible 20-inch rear wheel on a single-speed coaster-brake setup. Choose it if the existing bike uses the listed hub and axle arrangement. Limitation: It is a rear wheel only, and its single-speed coaster hub is not described as a cassette or multi-speed hub.
20-Inch Magnesium Five-Spoke Wheel Set
This set is described as a one-piece, five-spoke magnesium wheel design. The listed front and rear spacing is 100 mm by 135 mm, with axles included and 6000zz bearing size. The rim width is approximately 1.062 inches. The listing also mentions compatibility with rotary 7-, 8-, or 9-speed flywheels and a 44 mm hole spacing for adding front disc brakes.
Best for: Buyers comparing a one-piece wheelset whose listed rear spacing is 135 mm. Its detailed measurements help with fit checks, but they also make clear why measuring the bike matters. Limitation: The 135 mm rear spacing differs from the Skyway set’s 110 mm figure, so do not assume it fits a BMX frame without checking frame and hub dimensions.
Black Six-Spoke 20-Inch Front Wheel
This is a 20-inch front wheel with a black, six-spoke BMX-style design. The listed hub uses a 3/8-inch front axle, the outside width is 38 mm, and the product specifies a Schrader valve. These details make it a front-wheel replacement choice rather than a complete set.
Best for: Riders who need a front wheel and whose bike matches the listed axle size and tire-valve requirement. It is a direct comparison to the six-spoke rear wheel above, but covers only the front. Limitation: No rear wheel is included, so it will not replace a full wheelset by itself.
MEGHNA Five-Spoke 20-Inch Wheelset
The MEGHNA set uses a five-spoke integrated wheel design and is listed for 20 x 1.75–2.125-inch tires. Its description names kids’ bikes, folding bikes, BMX bikes, mountain bikes, and freestyle bikes as intended applications. It also describes a forming process without welding points and a shimmer coating on the spokes.
Best for: Buyers looking for a distinctive five-spoke wheelset with a stated tire-size range and broad intended-use list. It is a useful alternative to the Skyway when the tire range and integrated appearance are priorities. Check before buying: The supplied details mention single- or 6–11-speed freewheel hub options but do not specify the exact spacing or configuration selected; confirm those details for your bike.
Buying Guide: How to Choose 20-Inch BMX Mag Wheels
Do you need a front wheel, rear wheel, or complete set?
Start by deciding what you are replacing. The two six-spoke plastic options are individual wheels: one front and one rear. The Skyway, magnesium, and MEGHNA products are presented as sets. Replacing only one wheel can be more practical, but its axle, hub, braking arrangement, and dimensions must match the existing setup.
Which measurements should you check?
Confirm the wheel diameter, axle size, and hub spacing before ordering. A 20-inch label alone does not guarantee fit. Compare the front spacing with the fork and the rear spacing with the frame. The listed examples range from 110 mm rear spacing for the Skyway to 135 mm for the magnesium set. Also verify rim width and tire size where those specifications are provided.
What rear hub and brake type does your bike use?
Identify whether the bike uses a coaster brake, cassette, or freewheel arrangement. The six-spoke rear wheel is specifically listed as a single-speed coaster wheel. The Skyway description identifies a BMX cassette rear, while the other sets list different freewheel or speed-related details. Do not treat these hub types as interchangeable without confirming the bike’s requirements.
Is a one-piece or integrated design right for you?
Compare the product’s stated construction and compatibility rather than choosing by spoke appearance alone. Skyway highlights its Tuff design and tire options; the magnesium set provides several measurements; MEGHNA specifies a tire range and integrated forming process. Check the exact hub configuration and mounting needs when details are not supplied.
Frequently Asked Questions
Are all 20-inch BMX mag wheels interchangeable?
No. Wheel diameter is only one fit requirement. Axle size, hub spacing, hub type, brake setup, and tire clearance can differ.
Can I replace only the rear wheel?
Yes, if the replacement matches the bike’s rear spacing, axle, hub, and brake arrangement. The listed six-spoke coaster wheel is a rear-only option.
What does 100 mm front and 110 mm rear spacing mean?
These are listed hub-spacing measurements used to compare the wheel with the fork and frame. Check your bike’s required dimensions before choosing a wheelset.
Do these wheels include tires?
The supplied product details do not confirm that tires are included. Check the product listing for package contents before ordering.
Can I use a coaster-brake rear wheel with a cassette drivetrain?
The listed coaster wheel is described as single-speed, while a cassette setup uses a different hub arrangement. Confirm the required hub type rather than assuming they are compatible.