Custom Bike Builds at South Downs Bikes

Have you ever dreamed of owning a bike built uniquely for you and your requirements? Specialized S-Works and Trek Project One are two of the best custom bike build options available. Our specialist team will assist you every step of the way in creating your own unique bike, whether it's road, time trial or MTB specific builds - we're here to help. You'll choose a frameset, size and fit, components spec and colour scheme and we'll build your dream bike - the opportunities are endless.

We love custom bike fitting as well as making sure you get exactly what you need. You can expect fully qualified bike technicians, wheels from Enve, Roval, Reynolds, Zipp, Fulcrum and Shimano and mechanical or electronic group sets. We can even help you with various funding options such as 0% Finance.


To discuss a custom build:

Contact our Storrington store

01903 745 534

Contact our Worthing Store

01903 244 644


Specialized S-Works - Made in Racing


For decades S-Works has been crossing finish lines, climbing podiums and collecting rainbow stripes all over the world, making the S-Works division "the absolute pinnacle of Specialized’s design and engineering prowess.”

We are proud to offer you the best-of-the-best products built for champions and all riders who demand performance, quality, and innovation without compromise.


Trek Project One


Create your very own with Project One, Trek’s custom bike program. Customize, personalize, sensationalize, the choice is yours. Just select the model, fit, paint, and parts you desire, and we’ll build your dream bike.

1. Choose your model
Keep it on the road with Madone, Domane, Speed Concept, Émonda or Silque, or take your dream to the trail with Fuel EX 29, Procaliber SL or Top Fuel.


2. Choose your styling
Thousands of design schemes, from boldly simple to outrageously cool, are brought to impeccable life by the best artists in the business.


3. Choose your components
You can spec every detail to your liking, from wheelset and group to bar tape and cable housing—or choose one of the carefully curated combinations.


4. Choose your fit
The right fit is everything. We're here to help you select your ideal geometry and sizing for ultimate performance and comfort. With our own Precision Fit rig we can set up any road or TT bike allowing us to order your dream bike to your exact measurements so its ready to go straight out of the box.