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2017 Pivot Mach 429 Trail Mountain Bike Frame


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2017 Pivot Mach 429 Trail Mountain Bike Frame


The Mach 429 Trail Mountain Bike Frame is an outspoken, reactionary Luddite’s dream. Pivot designed the frame to incorporate virtually every new speck of tech churned out by the industry in the latest wave of re-imagined standards, the shining star of which is definitely a Boost 148 rear hub. If you’re into not being into the latest and greatest, then bikes like the Mach 429 Trail will give you reason to smile by letting you lord it retro atop your mid-90s frame, coil fork, and 26in wheels. But if you’re into more stiffness, more versatility, and riding the ever-advancing wave of off-road tech, then the 429 Trail will give you reason to shred.

The frame itself begins life with Pivot’s hollow-core internal molding process for uniform, controlled wall thicknesses and material distribution. This process virtually eliminates inconsistencies and resin pooling, increasing structural integrity while targeting areas for weight loss. The frame has a 67.5-degree head tube and relatively stubby chainstays, making it slack enough to challenge lines across rock gardens but nimble enough to pick its way through enduro-grade terrain — all while sticking climbs and roosting berms in the manner that made us fall in love with its immediate predecessor, the 429SL.

The 429 Trail’s DW-Link suspension takes a handful of queues from Pivot’s Mach 6 and Phoenix frames, teasing a depth out of the 116mm of travel that feels closer to a proper five-inch trail bike. The canny cyclist may spot elements of Pivot’s DH clevis and enduro lower linkage in this model, but the completely new upper linkage translates those big-hit designs to the traction-focused language of a trail bike. By bringing the 429SL’s small-bump compliance and race-worthy trail-contact into conversation with the Mach 6’s terrain-erasing capabilities, the 429 Trail defines the crossroads where XC speed meets fearless, enduro aggression — especially when paired with the responsiveness and decreased deflection of the wider, Boost hub standard.

The Boost 148 rear axle standard allows for more width across the board: hub, chainstays, bottom bracket, and chassis. This makes for a shallower spoke angle, which considerably stiffens the 429 Trail’s wagon wheels. It also accommodates wider pivot placement for longer life in the suspension bearings and a stiffer rear triangle. That extra width leaves room to slam the rear wheel up, too, shortening the chainstays for even more efficiency and dexterity. The externally routed cables make for easy maintenance, which we like, and also lower the bar for entry by reducing the manufacturing cost, which we like even more. In one final insult to Luddites everywhere, the added tire clearance also makes the 429 Trail compatible with 27.5+ tires.


2017 Pivot Mach 429 Trail Mountain Bike Frame

Frame Material:

carbon fiber



Wheel Size:

29 in, 27.5 + in

Rear Shock:


Rear Travel:

116 mm

Head Tube Diameter:

1.125 – 1.25 in tapered

Headset Included:


Bottom Bracket Type:


ISCG Tabs:

yes, ISCG 05

Front Derailleur Mount:

(not included) e-type Shimano side-swing only

Seatpost Diameter:


Rear Axle:

Boost 12 x 148mm

Recommended Use:

all-mountain, trail

Manufacturer Warranty:

3 years


2017 Pivot Mach 429 Trail Mountain Bike Frame


Mach 429 Trail
  Seat Tube


Effective Top Tube






Stand Over Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Height




S 16in 22.85in 23.91in 15.1in 28.54in 4in 67.5o 72.8o 13.19in 17.45in 43.7in
M 17.5in 23.9in 23.93in 16.11in 28.98in 4in 67.5o 72.8o 13.19in 17.45in 44.69in
L 19in 24.75in 24.59in 16.66in 29.29in 4.7in 67.5o 72.8o 13.19in 17.45in 45.47in
XL 20.5in 25.6in 25.71in 17.14in 30.04in 5.9in 67.5o 72.8o 13.19in 17.45in 46.46in


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