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Custom Bike Builds from SeaBass Cycles, London

We build custom built bikes using a selection of the best new steel frames and new parts currently available.

We regularly update our Instagram page with custom builds: @seabasscycles For enquiries please call our stores or email: [email protected]


Choosing A Frame

We’re here to help you select the frame that's the correct size and works for the disciplines you will be using if for and of course within your budget. We have a selection of frame choices in store from Soma Fabrications, Brother Cycles, Specialized, Ritchey & More.


Parts & Groupset Packages

We offer Parts Packages to fit all budgets & styles of riding. We regularly fit full and partial groupsets from the Shimano road and MTB series to fit every budget, from Sora all the way up to Dura Ace Di2, Alivio all the way up to XTR. And it's the same for Sram, Campagnolo, and even less common individual components from Hope, Box Components, Rohloff, and many more.

Often the entire groupset package will work out better value for money than buying all the components individually, so talk to us about getting a complete, matching groupset which works together in perfect harmony to complete your custom build, or to upgrade your current bike.


Wheel Packages

We offer a wide range of "off-the-shelf" hand-built wheels. We generally always have stock of the road and touring/disc road wheels built up and ready to take away on the day.

For our SeaBass prebuilt wheels we choose Kinlin rims, Bitex hubs and Sapim Race spokes. Kinlin offer a wide range of very competitive rim options with the same features as much more expensive brands. The majority of the rims are tubeless compatible, under 500g, and have a very long-lasting braking surface. Most of the disc rims are offset, which helps to achieve a more even spoke tension and therefore a much stronger wheel.

Bitex hubs are also very competitive in terms of pricing and performance features. They are very lightweight, offer a 6-pawl engagement system, they're fitted with very durable bearings, and are very easy to service. We've tried and tested many brands of hubs over the years and we feel Bitex offer excellent value for money and are a really solid choice.

We also offer Hope Tech hubs for those who wish to level-up on our hand-built wheels. We can also supply many other rim and hub brands if you have something in mind.

Whether it's a light-weight road wheel or heavy-hitting mountain bike wheelset you're after, we will have the stock to build the right set for you.

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