Pivot Mach 4 SL Carbon Bike Frame

Pivot says...

Propel yourself up climbs and speed into orbit around the competition with Pivot's new cross-country race rocket Mach 4 SL Carbon Bike Frame. This speed demon is built with weighty goals in mind, in particular, shedding as much as possible, and we think that Pivot's engineers did a damn good job, as they drop a whopping 300-grams (three-quarters of a pound for those who prefer to keep things imperial) off of its predecessor 429SL. It speeds forward with race-runed geometry that's roots combine the coveted Mach 4 and 429 SL with a sharp carbon layup for stiff, but feathery stature that won't weight you down. But don't let this lightweight demeanor fool you -- with steep geometry, 29-inch wagon wheels, and a new vertical shock layout, this rocket is eager to attack climbs with speed of a puma, and lace its way through technical rock gardens as you soar to the front of the pack. As we've seen throughout the bike industry, the Mach 4 SL takes on the popular trend of longer-slacker, but doesn't go overboard into Trail territory, pulling the head tube out to just 67. 5-degrees (paired with a 120mm fork). Compared to the previous 429 SL's 69. 3-degree head angle, the Mach 4 SL's head tube will lend the slacker angle to a bit more stability on descents, so you can take on steeper drops, and chunkier rock gardens without your bike feeling noodly under pressure. But this is a cross-country machine after all, and with pedaling being top priority, Pivot's engineers make things steeper in the hind-quarters, moving to a prime perch for power at 73-and-a-half degrees -- ideal for speedy power transfers, and staying forward when you're out of the saddle and mashing up steeps. Speaking of pedaling platform -- if you're familiar with Pivot's Mach 4 and 429 SL, you may be looking at the rear triangle with a puzzled gaze, as its shock layout shifts tremendously. While the Mach 4 SL still carries on with the coveted DW-link, Pivot's designers opt for a new vertical shock layout. This ..

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