Customs · Classics · Choppers · Cruisers
New Machine Parts that Sing
Customs, Classics, Choppers and Cruisers hand-picked and reformed — armed with the parts that make it matter.
Why C4 Motorcycles
We're riders selling to riders
Each bike that comes through the workshop gets photographed, filmed running, and written up with honesty — what's been done, what's wear, and which riders it suits best.
Buying parts? Tell us what you ride. We'll match the part to your bike and do our best to make sure it's the one you need. If we don't have a part on the website, get in touch and if it's something we can order, we'll get it ordered for you.
For used parts, visit our partner site.Same crew, same standards — C4 is where our complete bikes and new parts live.
If we sell it, we'd ride it ourselves- 01Fully picturedDetailed shots of the whole bike — scuff and fluff too.
- 02Filmed runningHear it rumble and take it for a run before you decide.
- 03Written up honestWhat's been done, what's wear, who it works for.
We Build Motorcycles for You
C4 Motorcycles was established to build bikes that you can't get from a dealer showroom. If you want something unique, click on the cards below to see if we have something for you. Have questions, want to visit the showroom, get in touch.
Customs
Unique builds with a story
A unique custom build that has been modified. We hand build our customs. These changes could alter its look, handling, or performance. Get in touch, we can modify your bike to meet your own specifications and style.
See the Customs
Classics
The old iron kept honest
At least 20 years old, and returned to or maintained in its original design and historical significance. Rather than simply being an "old" ride, classics are celebrated for their heritage, mechanical nostalgia, and iconic style.
See the Classics
Choppers
Long, Loud and Unapologetic
A chopper bike is a heavily customized motorcycle built with a stretched-out, laid-back frame, lengthened front forks, and a steep steering angle. The term comes from the 1950s and 60s when riders would "chop" off non-essential parts of stock motorcycles to save weight and personalize the design.
See the Choppers
Cruisers
Eat up miles with manners
Inspired by classic American motorcycles from the 1930s to the 1960s (like early Harley-Davidsons or Indians), cruiser motorcycles are built for laid-back highway cruising and city riding.
See the CruisersOrder New Parts with C4
We supply new parts. The website lists Hendler parts. If you can't find what you're looking for online, get in touch and we can help you find it.
- AthenaCylinder Kit 78.00mm Standard With Top Set Kawasaki KX250F 21-22From £369.99In stock
- AthenaBig Bore Cylinder Kit 82.00mm (+4.00mm) With Top Set, Piston Kawasaki KX250F 2021-2022 (276cc)£667.99In stock
- AthenaCylinder & Gasket Set Kit 96.00mm Kawasaki KFX450R 08-14£369.99In stock
- AthenaCylinder Kit 96.00mm Standard With Top Set, Piston Kawasaki KFX450R 08-14£535.99In stock
- AthenaBig Bore Cylinder Kit 100.00mm(+4.00mm) T Set,Piston Kawasaki KFX450R 08-14 (490cc)£968.99In stock
- AthenaCylinder & Gasket Set Kit 96.00mm Kawasaki KX450F 06-08, KLX450R 08-17£369.99In stock
- AthenaCylinder Kit 96.00mm Standard With Top Set, Piston Kawasaki KX450F 06-08, KLX450R 08-17£535.99In stock
- AthenaBig Bore Cylinder Kit 100.00mm (+4.00mm) T Set,Piston Kawasaki KX450F 06-08 (490cc)£723.99In stock
Got a bike to sell?
Honest offers, fast payment — running or not.