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2024 KONA ROVE and UNIT - Now accepting reservations
Pre-orders are now open for KONA's 2024 models.
KONA offers many recommended models for 2024, inc...
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Cinelli "Tutto Plus" is a single-speed bike perfect for city riding.
This time, I'd like to introduce a custom commuter build of the "cinelli" "Tutto Plus," which h...
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The custom Surly Midnight Special is complete.
The "Midnight Special," a tough road bike proposed by Surly, has been completed.
The frameset was...
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Just-right single speed hub
The standard for bicycle hubs has changed dramatically in the past few years. While that change h...
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Customize an All-City Super Professional into a high-spec commuter bike with welding and paint
The Super Professional, popular as a commuter bike from All-City.
We've brought back the now-...
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Surly's new Preamble complete bike is available for immediate delivery!
Preamble is perfect for your first Surly.
We have stock available for immediate delivery!
Quant...
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Introducing a custom build of the Surly Preamble.
The Surly Preamble is a versatile bike that can be used for everything from commuting to cycling....
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The 2023 CINELLI GAZZETTA, a versatile chromoly fixie bike perfect for city riding, has arrived.
While retaining its classic form, bold graphics have been applied to the downtube, updating it t...
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The Surly Preamble Flat Bar complete bike is a new arrival.
Surly's new model, the Preamble, has arrived at Grumpy.Simple, sturdy, and compatible with many a...
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A kit that can convert any bike to a single speed. This is about converting a geared hub to a single speed.
There are two key points when building a single-speed bike.
These are the frame standard and the...
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March 20 Update: Used Bikes for Sale at Grumpy
Introducing used bikes for sale at More Grumpy, which handles rental pits, used bikes, and used p...
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You can test ride the Surly Steamroller in all sizes!
We now have demo bikes for the Surly Steamroller available in all sizes.There are three sizes: 49...
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