Bike Size Charts
United States · Est. 1977

Diamondback Bike Size Chart

Diamondback started in 1977 in the United States as a BMX brand and later added mountain, road, gravel, hybrid, and kids bikes. It remains a mass-retail name rather than a race-only line. This page has Diamondback’s charts for each of those categories. Kids sizes use wheel diameter; adult tables use frame labels. Confirm the exact model, because retail listings often collapse several years into one chart.

Official website →
Size charts
5 tables
Covers
85–200 cm
Models
13

Height ranges compared

Where Diamondback sizes actually sit

Used sizes share one height scale, so overlapping and identical ranges are visible before you read a single table.

Mountain

Height ranges on this page, from 153 to 204 cm. S: 157–170 cm. M: 168–180 cm. L: 178–190 cm. XL: 188–200 cm.

  1. S157–170 cm
  2. M168–180 cm
  3. L178–190 cm
  4. XL188–200 cm
153 cm179 cm204 cm
Rider height ranges for Mountain sizes on this page.

Road

Height ranges on this page, from 148 to 202 cm. 48: 152–160 cm. 50: 158–165 cm. 52: 163–170 cm. 54: 168–176 cm. 56: 175–183 cm. 58: 181–190 cm. 61: 188–198 cm.

  1. 48152–160 cm
  2. 50158–165 cm
  3. 52163–170 cm
  4. 54168–176 cm
  5. 56175–183 cm
  6. 58181–190 cm
  7. 61188–198 cm
148 cm175 cm202 cm
Rider height ranges for Road sizes on this page.

Gravel

Height ranges on this page, from 148 to 202 cm. XS: 152–163 cm. S: 161–170 cm. M: 168–178 cm. L: 176–188 cm. XL: 186–198 cm.

  1. XS152–163 cm
  2. S161–170 cm
  3. M168–178 cm
  4. L176–188 cm
  5. XL186–198 cm
148 cm175 cm202 cm
Rider height ranges for Gravel sizes on this page.

Hybrid

Height ranges on this page, from 148 to 202 cm. XS: 152–163 cm. S: 161–170 cm. M: 168–178 cm. L: 176–188 cm. XL: 186–198 cm.

  1. XS152–163 cm
  2. S161–170 cm
  3. M168–178 cm
  4. L176–188 cm
  5. XL186–198 cm
148 cm175 cm202 cm
Rider height ranges for Hybrid sizes on this page.

Kids

Height ranges on this page, from 81 to 154 cm. 12" wheel: 85–100 cm. 16" wheel: 100–117 cm. 20" wheel: 115–132 cm. 24" wheel: 130–150 cm.

  1. 12" wheel85–100 cm
  2. 16" wheel100–117 cm
  3. 20" wheel115–132 cm
  4. 24" wheel130–150 cm
81 cm118 cm154 cm
Rider height ranges for Kids sizes on this page.

Size charts by bike type

Pick the category that matches the bike, then confirm the exact model.

Diamondback Mountain Bike Size Chart

Brand-level mountain ranges for Diamondback. Use height and inseam to find your starting size.

  • Size

    S

    Height

    157-170 cm

    Inseam: 72-78 cm

  • Size

    M

    Height

    168-180 cm

    Inseam: 77-83 cm

  • Size

    L

    Height

    178-190 cm

    Inseam: 82-88 cm

  • Size

    XL

    Height

    188-200 cm

    Inseam: 87-94 cm

Diamondback Road Bike Size Chart

Brand-level road ranges for Diamondback. Use height and inseam to find your starting size.

  • Size

    48

    Height

    152-160 cm

    Inseam: 69-73 cm

  • Size

    50

    Height

    158-165 cm

    Inseam: 72-76 cm

  • Size

    52

    Height

    163-170 cm

    Inseam: 75-79 cm

  • Size

    54

    Height

    168-176 cm

    Inseam: 78-82 cm

  • Size

    56

    Height

    175-183 cm

    Inseam: 81-85 cm

  • Size

    58

    Height

    181-190 cm

    Inseam: 84-89 cm

  • Size

    61

    Height

    188-198 cm

    Inseam: 88-93 cm

Diamondback Gravel Bike Size Chart

Brand-level gravel ranges for Diamondback. Use height and inseam to find your starting size.

  • Size

    XS

    Height

    152-163 cm

    Inseam: 69-75 cm

  • Size

    S

    Height

    161-170 cm

    Inseam: 74-79 cm

  • Size

    M

    Height

    168-178 cm

    Inseam: 78-83 cm

  • Size

    L

    Height

    176-188 cm

    Inseam: 82-88 cm

  • Size

    XL

    Height

    186-198 cm

    Inseam: 87-93 cm

Diamondback Hybrid Bike Size Chart

Brand-level hybrid ranges for Diamondback. Use height and inseam to find your starting size.

  • Size

    XS

    Height

    152-163 cm

    Inseam: 69-75 cm

  • Size

    S

    Height

    161-170 cm

    Inseam: 74-79 cm

  • Size

    M

    Height

    168-178 cm

    Inseam: 78-83 cm

  • Size

    L

    Height

    176-188 cm

    Inseam: 82-88 cm

  • Size

    XL

    Height

    186-198 cm

    Inseam: 87-93 cm

Diamondback Kids & Youth Wheel Sizes

Youth and kids wheel-size starting ranges for Diamondback. Confirm inseam and brake reach before buying.

  • Wheel size

    12" wheel

    Height

    85-100 cm

    Inseam: 35-45 cm

  • Wheel size

    16" wheel

    Height

    100-117 cm

    Inseam: 45-55 cm

  • Wheel size

    20" wheel

    Height

    115-132 cm

    Inseam: 55-65 cm

  • Wheel size

    24" wheel

    Height

    130-150 cm

    Inseam: 63-73 cm

Starter kit

Helmet, light, lock, bottle, and a pant-leg strap. Size the bike here; buy the complete adult bike at a shop.

See more in Shop
Giro Register II MIPS adult bike helmet

Giro

Register II MIPS

Everyday adult helmet with MIPS and a simple dial fit.

Universal Adult, 54–61 cm

View on Amazon

Price and availability on Amazon

NiteRider Swift 300 USB bike headlight

NiteRider

Swift 300

Compact USB headlight for commuting and dusk rides.

Handlebar mount, 300 lumens

View on Amazon

Price and availability on Amazon

Kryptonite Evolution Mini-7 U-lock with cable

Kryptonite

Evolution Mini-7 with 4′ cable

Hardened U-lock plus a cable for wheels or a locked-together pair.

Fits most road, gravel, and hybrid frames

View on Amazon

Price and availability on Amazon

CamelBak Podium Chill 21 ounce bike bottle

CamelBak

Podium Chill 21 oz

Insulated squeeze bottle for everyday rides.

Fits a standard ~73 mm cage

View on Amazon

Price and availability on Amazon

Green Guru narrow pant-leg strap

Green Guru

Narrow pant-leg strap

Upcycled inner-tube strap that keeps a pant leg off the chain.

Adjustable hook-and-loop, about 16 in long

View on Amazon

Price and availability on Amazon

As an Amazon Associate we earn from qualifying purchases. Affiliate disclosure.

How to measure

Height filters the chart. Cycling inseam decides which overlapping size to keep. The method is the same for every brand.

Height and inseam

Height

Take shoes off and stand tall, looking straight ahead. A helper should rest a flat object on the crown of your head, then run a tape from the floor to the underside of that object. Save the number in inches and centimeters — charts use both.

Inseam

Stand tall and barefoot with feet slightly apart. Ask a helper to measure vertically from your crotch to the floor. Keep your legs straight and feet flat.

Need the full sequence, including between-size rules? See how to choose a bike size.

FAQ

  • What Diamondback bike size do I need?

    Use your height on the Mountain, Road, Gravel, Hybrid and Kids charts on this page. On the mountain table, 168-170 cm sits in both S and M. Cycling inseam and standover pick the side. Then check stack and reach for the exact Diamondback model.

  • Can I copy a Diamondback size from one bike type to another?

    Not safely. Diamondback Mountain, Road, Gravel, Hybrid and Kids charts on this page are separate. A Diamondback S on the mountain table and a Diamondback 48 on the road table are not interchangeable.

  • Which Diamondback sizes are listed on this page?

    The Mountain, Road, Gravel, Hybrid and Kids charts on this page include S, M, L (157-200 cm on the mountain table). Verify the current Diamondback model chart on the official site before purchase.

Sources

Where these charts come from

Brand-level ranges on this page are compiled from published size data. Confirm the current model chart before you buy.

Related charts

General chart and matching bike types