Castelli Body Paint 4.X Speed Suit – Silver Grey/Black for Jerseys – Road

Simply engineered to be the fastest suit for racing against the clock.

If they could they would keep this suit an industrial secret, a competitive advantage for their pro riders. But the UCI rules say they have to make it commercially available to keep the playing field even for all teams. So here it is.

They don’t want to give away too many of the secret details that make it so fast, but there are a few details that you can see: amazing fit in the TT position, slippery fabrics, reduced seaming, and long legs with flat endings and flat grip tape to keep them in place. The long sleeves have a thumb loop to prevent them from riding up. There’s a window pocket on the back so you can place the race number out of the wind — and the window stretches and breathes, unlike others on the market.

Hundreds and hundreds of hours have gone into engineering this suit. They don’t say how many because they haven’t even tried to keep count. They have access to the test facilities at the Norwegian Technical University in Trondheim, where their detailed process addresses fabric selection and suit construction.

This suit was made for WorldTour riders. It’s optimized for speeds above 45 km/h and for extreme positions. At those speeds and with the right setup it’s the fastest suit they’ve ever tested. Thanks, UCI.

Technologies

Kiss Air – A stretchy, soft skin-care layer provides total freedom of movement with minimum bulk. Dual density and infinitely variable thickness foam gives you the perfect cushioning for every part of the pad.

Features

Pure speed equipment, created for World Tour racing
Developed over two years based on hundreds of hours of CFD analysis, wind tunnel testing and WorldTour racing
Fabrics developed and tested extensively for optimum aerodynamics at speeds of 45 km/h and up
Reduced seaming for optimum aerodynamics
No-sew race number window to prevent number flapping in the wind
Extra-long legs with flat leg endings with PU grip elastic on the inside

Specifications

Size Guide