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Spawn Cycle

Find Your Perfect Bike

Sizing

How to find the right size bike for your child without going to a bike shop. Start with their height and inseam.

We use the combination of kids' height and inseam as it is more accurate than the traditional approach of using the standover and seat height range of the bike itself.

Here are the things we take into account when making a sizing recommendation:

Inseam - inside leg, from the floor to the top of crotch

Height

Bike skills and intended use (e.g. kids size down for dirt jumping, experienced riders can move up to bigger bikes sooner, etc.)

MEASURING INSEAM

Have your child stand barefoot with their back against a wall, and hold a book between their legs so that it is firmly against their crotch and the wall (the same place their bicycle saddle will be).

Measure the distance from the top of the book to the floor to get the correct inseam measurement.

Bike Approximate Age Minimum Height Minimum Inseam Maximum Inseam

Tengu 12"

2+ 33" 11" 15"

Yoji 14"

2.5+ 35" 14" 18"

Yoji 16"

3.5+ 36+" 16" 21"

Raiju 20"

5+ 42+" 19" 24"

Yama Jama 20"

4.5+ 42"+ 18.5" 24"

Yama Jama 22"

5+ 44+" 19" 25"

Yama Jama 24"

8+ 48" 22" 28"

Yama Jama 26"

10+ 53" 24" 30"

Kotori 20"

5+ 43" 19" 25"

Kotori 24"

9+ 50" 23" 29"

Kotori 26"

11+ 56" 26" 32"

Rokk 20"

5+ 45" 20.5" 24"

Rokk 22"

5+ 47" 21.5" 25.5"

Rokk 24"

8+ 49-50" 24" 29"

Rokk 24"/26" - 26" Buid

9+ 52-53" 26" 30"

Rokk 26"/27.5" - 26" Build

9+ 54" 26" 30"

Rokk 27.5"

11+ 59" 27" 32"

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