Pivot's new Mach 5.7 Carbon doesn't just muddy the line between cross-country and trail bike. It erases it altogether, offering up a remarkably perky feel - better than some dedicated race bikes we've ridden - while still delivering a healthy 144mm of rear wheel travel and a rewardingly progressive frame geometry.

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Just as the Smart ENVE System 6.7 is forging a presence on triathlon and road race podiums around the globe, ENVE Composites is now shipping the 6.7s shallower counterpart known as the Smart ENVE System 3.4.

The new Smart ENVE System 3.4s are specifically designed as a multi-purpose wheelset that can be used in virtually all weather conditions, terrains and disciplines. The 3.4s, being shallower, offer maximum performance characteristics for professional and novice riders alike in mountainous terrain, or when the wind conditions are too strong for the 6.7s. The 3.4 wheel system is capable of producing very low drag numbers while creating a higher stability index given its shallower depth. The front rim is 26mm wide and 35mm deep while the rear is 24mm wide and 45mm deep.

As is so often the case, improving upon existing technology requires approaching the problem from a different angle. ENVE Composites and Simon Smart have done just that in creating the world’s fastest bicycle wheels.  Our development of a new line of aero wheels that work in harmony with bike and body is the unique approach that has resulted in the Smart ENVE System.  The Smart ENVE System realizes maximum aero advantage when mounted in a bike frame with a rider aboard and not solely when the wheel is isolated in the wind tunnel.