VIPER 640 J-5 JIB Trousers&Shorts originally developed for consecutive class

originally developed for consecutive class champion Matt Mulder

Its full radial construction offers a smooth and strong sail

Let your sail's performance run free with this mast

Featuring a flatter profile and a harder cloth than the I-1 Gold

This is our standard racing jib

VIPER 640 J-5 JIB Trousers&Shorts originally developed for consecutive classDesigned with the same shape and twist as the multiple World and Continental Champion J4 jib, the J5 takes durability and performance to another level with the introduction of Aramid fibers. You'll enjoy a longer lasting racing shape and superior performance throughout the wind range. The J5 has been impossible to beat since it's introduction. It comes with 3 different stiffness options for your top batten so you'll be well suited to use it in any