You found the perfect pants. The colour, the price, the fit — everything checks out. Then you hesitate between M and L, order on a guess, and they arrive too tight across the hips. This guide exists so that never happens again.

Choosing the right BMX pants size or MTB pants size is not the same as buying a pair of jeans. Race pants have a technical cut designed for pedalling, jumping, and riding in a low position. A poorly fitted pair can restrict your movement, create dangerous bunching near the drivetrain, or simply hold you back on the track.

In this guide, you will find the three measurements to take, the official NOLOGO size chart, and specific rules depending on your discipline BMX racing, mountain biking / MTB, or motocross MX.

Why your jeans size doesn’t work here

This is the most common mistake riders make when ordering online. Your size 32 jeans have no direct connection to a size M or L race pant. The reasons are straightforward:

• BMX pants are built for a full knee bend in a sprint position.
• MTB pants include reinforced zones at the knees and hips that change the overall fit.
• MX pants are cut high-waisted to stay in place during a crash comparing them to jeans is simply not possible.

The good news: three measurements are all you need to find your size with confidence.

The three measurements to take

1. Waist circumference

Wrap a soft measuring tape around your natural waist, just above the hips. Stand straight, breathe normally — no sucking in. Note the figure in centimetres.

2. Hip circumference (priority measurement)

Wrap the tape around the widest part of your hips and seat, roughly 20 to 25 cm below the waist. This is the most important measurement. It determines whether you can actually get the pants on and pedal without tension. When in doubt between two sizes, always let the hip measurement decide.

3. Inseam length

Measure from the crotch to the ankle with your leg slightly bent. This prevents two classic mistakes: pants that are too long and brush against the chain, and pants that are too short and pull behind the knee when you’re in a low position.

Practical tip: Take your measurements wearing the same layer you’ll ride in. If you wear padded shorts underneath, measure with them on — the numbers change.

BMX and MTB Pants Size Chart NOLOGO Racing

The chart below corresponds to official NOLOGO sizes. All measurements are in centimetres. When a measurement falls between two sizes, always go with the larger one.

Size	Waist	Hips	Inseam	Age guide
XS	58 – 62 cm	68 – 72 cm	58 – 62 cm	5 – 7 years
S youth	62 – 66 cm	72 – 76 cm	62 – 66 cm	7 – 9 years
M youth	66 – 70 cm	76 – 80 cm	66 – 70 cm	9 – 11 years
L youth	70 – 76 cm	80 – 86 cm	70 – 76 cm	11 – 13 years
XL youth	76 – 82 cm	86 – 92 cm	76 – 82 cm	13 – 15 years
S adult	76 – 80 cm	86 – 92 cm	76 – 80 cm	—
M adult	80 – 86 cm	92 – 98 cm	80 – 84 cm	—
L adult	86 – 92 cm	98 – 104 cm	82 – 86 cm	—
XL adult	92 – 100 cm	104 – 112 cm	84 – 88 cm	—
XXL adult	100 – 108 cm	112 – 120 cm	86 – 90 cm	—

BMX, MTB or MX: the cut makes all the difference

BMX Racing Pants

The BMX cut is the most tapered in the range. Legs narrow from the knee down to eliminate any risk of snagging on the chainring or chain out of the gate. If you are between two sizes, prioritise comfort around the crotch — that is the area under the most stress during a sprint.

NOLOGO BMX Pants 2026

Tapered cut, lightweight fabric, available in Black, Red, White and Blue. Sizes XS to XXL adult.

Shop BMX Pants →

MTB / Mountain Bike Pants

The MTB cut is slightly more relaxed across the hips to allow a full range of motion on descents and climbs. If you plan to wear padded shorts underneath, go up half a size — the extra layer compresses the hips and changes how the size feels.

NOLOGO MTB Pants

Compatible with padded shorts, compact resistant fabric, straight slightly tapered cut.

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Motocross MX Pants

MX pants are cut high-waisted with a thick 600-denier fabric. If you wear a jacket or vest underneath, take your measurements with it on — layering frequently bumps you up a full size. When in doubt, always size up: MX pants that are too tight in the thighs are uncomfortable and unsafe in a crash.

NOLOGO MX Pants

600D abrasion-resistant fabric, high waist, generous cut. Available in several colourways.

Shop MX Pants →

BMX and MTB pants sizing for kids

Sizing up a child is a slightly different exercise. Here are the three rules to know before you order.

Never order by age alone

The age references in the chart are guidelines only. A 10-year-old can easily wear an 8-year or 12-year size depending on their build. Always take real measurements hip circumference and inseam before choosing.

Allow 3 cm of room in the inseam

Legs grow faster than the rest of the body. Ordering with 3 cm of extra inseam length means the pants will fit perfectly by mid-season without needing to be replaced.

The ankle must always be clear in BMX

On a BMX track, fabric that brushes the ankle or drags on the ground is a direct snagging hazard in the drivetrain. This is not a style point — it is a safety rule. The ankle must be completely clear, without exception.

Key rule: For kids’ motocross pants, ask your child to squat fully before confirming the size. That is the recovery position after a crash if the fabric pulls tight, go up a size.

5 checks before you place your order

1. I have measured my hip circumference, not just my waist.
2. I have compared my inseam length against the product page data — not against a pair of jeans.
3. I know what I will wear underneath (padded shorts, bib shorts, nothing) and have adjusted my size accordingly.
4. For a child: I have allowed 3 cm of inseam room to last the full season.
5. When in doubt between two sizes, I chose the larger one. Pants that are too tight in the thighs cannot be fixed with a belt.

In summary

Three measurements, one size chart, and five quick checks that is all it takes to order your BMX or MTB pants with confidence. The right gear disappears into your riding. You stop noticing it the moment you get on the bike.

If you still have a question about your size after reading this guide, contact the NOLOGO team directly before ordering. We answer every sizing question no complicated returns.

And if you want pants in your club’s exact colours, the NOLOGO BY YOU configurator includes made-to-measure sizing.