Diamond Frame Bikes

Battle-tested in the Unforgiving Streets of Brooklyn

Shipping & Professional Assembly Included on Every Bike

Shop the bikes Find Perfect Match

What makes the perfect diamond frame bike?

Traditional Geometry

A traditional triangular (diamond) frame providing strength and stiffness

Reliable Drivetrain

Whether external or internal, a reliable drivetrain an essential part of your trusty steed

Premium Components

For ensuring your bikes looks and rides amazing for as long as it's at your side

Professional Assembly

With our industry-leading Buy & Ride program, leave the hassle to us-- shipping and professional assembly are covered by us.

Diamond Frame Bikes

Size	Height	Inseam
S	5'6" - 5'9"	29.5" - 31.5"
M	5'10" - 6'0"	31.0" - 33.0"
L	6'1" - 6'3"	32.5" - 35.5"

Between sizes? Reach out to us for personalized guidance. Have a question on sizing? Take our Size Finder Quiz by clicking here. Please take a moment to review our return and exchange policy, and remember, when in doubt, reach out.

HOW TO MEASURE YOUR INSEAM:

The MOST IMPORTANT measurement when sizing a bike is your inseam length. Don't base your inseam simply on your jean size. The more precise, the better.

1. Stand with your back against a wall and spread your feet 6"- 8" apart.

2. Place a book between your legs and up against the wall, spine up; raise it until snug against your crotch (this mimics your bike seat).

3. Have another person measure from the top of the book (spine) down to the floor.

4. We strongly encourage viewing this on how to properly measure your inseam.

Small

Medium

Large

Variants

Select a Size

Army Green Matte Black Raw

Roebling

Select

Color - Matte Black

Size - Size chart

Size	Height	Inseam
15/XS	5'0" - 5'2"	26.0" - 28.0"
17/S	5'3" - 5'6"	27.5" - 29.5"
19/M	5'7" - 5'11"	29.0" - 31.5"
21/L	6'0" - 6'2"	31.0" - 33.5"
23/XL	6'2" - 6'4"	33.0" - 34.5"

Between sizes or have a question on sizing? Take our Size Finder Quiz by clicking here, or reach out to us for personalized guidance. Please take a moment to review our return and exchange policy, and remember, when in doubt, reach out.

HOW TO MEASURE YOUR INSEAM:

The MOST IMPORTANT measurement when sizing a bike is your inseam length. Don't base your inseam simply on your jean size. The more precise, the better.

1. Stand with your back against a wall and spread your feet 6"- 8" apart.

2. Place a book between your legs and up against the wall, spine up; raise it until snug against your crotch (this mimics your bike seat).

3. Have another person measure from the top of the book (spine) down to the floor.

4. We strongly encourage viewing this on how to properly measure your inseam.

15/XS

17/S

19/M

21/L

23/XL

Variants

Select a Size

Lorimer

Select

Color - Soft Ivory

Size - Size chart

Size	Height	Inseam
14/S	4'10" - 5'0"	25.0" - 27.0"
16/M	5'1" - 5'4"	26.5" - 29.0"
18/L	5'5" - 5'7"	28.5" - 31.0"

Between sizes or have a question on sizing? Take our Size Finder Quiz by clicking here, or reach out to us for personalized guidance. Please take a moment to review our return and exchange policy, and remember, when in doubt, reach out.

HOW TO MEASURE YOUR INSEAM:

The MOST IMPORTANT measurement when sizing a bike is your inseam length. Don't base your inseam simply on your jean size. The more precise, the better.

1. Stand with your back against a wall and spread your feet 6"- 8" apart.

2. Place a book between your legs and up against the wall, spine up; raise it until snug against your crotch (this mimics your bike seat).

3. Have another person measure from the top of the book (spine) down to the floor.

4. We strongly encourage viewing this on how to properly measure your inseam.

14/S

16/M

18/L

Variants

Select a Size

Soft Ivory Matte Denim

Driggs 3

Select

Color - Matte Black

Size - Size chart

Size	Height	Inseam
M	5'6" - 5'10"	29.0" - 32.5"
L	5'11" - 6'4"	32.0" - 35.5"

HOW TO MEASURE YOUR INSEAM:

The MOST IMPORTANT measurement when sizing a bike is your inseam length. Don't base your inseam simply on your jean size. The more precise, the better.

1. Stand with your back against a wall and spread your feet 6"- 8" apart.

2. Place a book between your legs and up against the wall, spine up; raise it until snug against your crotch (this mimics your bike seat).

3. Have another person measure from the top of the book (spine) down to the floor.

4. We strongly encourage viewing this on how to properly measure your inseam.

Variants

Select a Size

Matte Black Denim Blue

Wythe Fixie

Select

Color - Raw

Size - Size chart

Size	Height	Inseam
S	5'4" - 5'7"	27.0" - 30.0"
M	5'8" - 5'11"	29.5" - 31.5"
L	6'0" - 6'3"	31.0" - 33.5"

HOW TO MEASURE YOUR INSEAM:

The MOST IMPORTANT measurement when sizing a bike is your inseam length. Don't base your inseam simply on your jean size. The more precise, the better.

1. Stand with your back against a wall and spread your feet 6"- 8" apart.

2. Place a book between your legs and up against the wall, spine up; raise it until snug against your crotch (this mimics your bike seat).

3. Have another person measure from the top of the book (spine) down to the floor.

4. We strongly encourage viewing this on how to properly measure your inseam.

Variants

Select a Size

Top Five Things To Consider When Buying a Diamond Frame Bike

Read the Guide

Style it Up

Shop our catalog of accessories that'll perfectly complement your diamond frame

Shop Accessories

Expert Opinions on Our Diamond Frame Bikes

"The bike itself has a vintage style that we really dig, but it's all the extra effort Brooklyn Bicycle Co. goes to for customers that permanently raises the bar."

"This double top-tube bicycle is a classic design with an added second horizontal support that increases the strength of the frame.”

"I found a reliable site to buy a bicycle online — my hesitations over quality are gone after putting my bike through its paces on the pothole-riddled streets of NYC."

Unsure which bike is the right one for you?

Let us help

Four questions to guide you to your perfect bike.

Take Bike Finder Quiz Schedule Free 1 on 1 Consultation

Perfect Transportation

It’s not just a great bike but the sales team was wonderful to deal with.

Thank you so much for sharing Steven. We're thrilled you're enjoying your Willow 7. It's become an incredibly popular model for us. - Ryan Zagata

Franklin 3

I like the city bike…I like sitting upright and after many yrs out of the saddle this is working great for me. 😊

Thanks for sharing Paulette. We are glad to learn that you are enjoying your Franklin 3. - Ryan Zagata

Brooks Proofide Leather Dressing

Glad this did the job for you. -Ryan Zagata

Really happy.

At 5'2", it's really great to find a bike that fits.
The shop that was picked to assemble the bike was really friendly and professional.
It's a fabulous bike.

Thank you so much for taking the time to share your feedback Margaret. We are thrilled you're enjoying your Franklin 8. -Ryan Zagata

Great purchase

I was a bit hesitant on purchasing a bike online but wow… so happy with this purchase. The bike I ordered was better than expected!

Thanks so much for sharing your feedback Shirlene. We are thrilled you are enjoying your Franklin. -Ryan Zagata

Perfect. Bicycle and Customer Service

I meant to write this a lot sooner. The bicycle is great. I am enjoying riding her around Baton Rouge, though it sometimes feels like an extreme sport. A cyclist, I have come to realise, is somewhat rare in these parts (and more than a little unwanted). Regardless, I persevere because I love cycling and hate cars and I am used to cycling. It was a fair bit safer in Europe, I got knocked off twice here already and this never happened to me before, but I am hoping that more people will take to cycling and then things will get better. Anyway I am not planning on stopping.
The bicycle is very trusty and beautifully designed. She withstood two pickup trucks so far (hopefully there won’t be more, but they have drive through Daiquiris here).
Excellent customer service throughout. Hassle free. Friendly.
Would have wrote this much sooner (got bicycle last June) but my mother died unexpectedly and so I went home to the UK for a while.

Thank you for sharing such a thorough review Violet. We are glad you've emerged unscathed from the daquiri drinking drivers. Thanks also for sharing such a fun photo. -Ryan Zagata

HOW TO MEASURE YOUR INSEAM:

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Diamond Frame Bikes

What makes the perfect diamond frame bike?

Traditional Geometry

Reliable Drivetrain

Premium Components

Professional Assembly

Diamond Frame Bikes

HOW TO MEASURE YOUR INSEAM:

HOW TO MEASURE YOUR INSEAM:

HOW TO MEASURE YOUR INSEAM:

HOW TO MEASURE YOUR INSEAM:

Expert Opinions on Our Diamond Frame Bikes

Let customers speak for us