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Mach 5.5 Carbon

The Ultimate Trail Bike

The Mach 5.5 Carbon builds on the legacy of our renowned Mach 5.7 Carbon as the quintessential trail bike. With 140mm of dw-link™ rear travel, it sticks to and claws up just about anything, with unparalleled pedaling efficiency. On descents, the Mach 5.5 Carbon’s incredible square edge bump performance and 160mm travel Fox 36 fork enables you to conquer terrain that makes other bikes cower. It’s a bike that inspires you to climb while looking forward to the descents and that begs you to push your limits while putting a smile on your face.

Rear Travel - 140mm
140mm

Rear Travel

Wheel Size - 27.5"
27.5"

Wheel Size

Material - Carbon
Carbon

Material

Ultra Light. Ultra Strong.

Weight matters…and so does strength. The Mach 5.5 Carbon matches Mach 6 Carbon durability while achieving Mach 429 SL Carbon weights. The result is the perfect balance of frame stiffness and ride feel. The frame’s carbon structure features our proprietary hollow core internal molding process combined with a highly optimized lay-up design, utilizing lighter weight, high modulus materials that save up to a pound (.45kg) over other trail and enduro bike designs. The Mach 5.5 Carbon is available as a complete bike, with builds weighing under 27lbs (12.2kg) complete with dropper, and with frame weights as low as 5.2lbs (2.35kg).

Ultra Capable.

The Mach 5.5 Carbon’s well-balanced geometry makes it the ultimate trail bike weapon. We combined a long and low cockpit with a 66.5-degree head angle for high-speed stability and amazing downhill performance. The bike’s short (430mm) chainstays and relatively steep seat angle help it rail the tightest corners and absolutely crush the steepest climbs.

Build your Mach 5.5 Carbon

We strive to build the best-performing cycling products in the world.

Mach 55 Carbon Red Satin Xtr Fox Live Value
Mach 55 Carbon Red Satin Xtr Fox Live Value
Bass Boat Blue
Bass Boat Blue
Red Satin
Red Satin

from $15,880.00

Find a Dealer

Graphics, colours, & specifications are subject to change without prior notification.

Graphics, colours, & specifications are subject to change without prior notification.

Kit
Team XX1 AXS - Fox Live
Pro X01 - Fox Live
Pro XT/XTR - Fox Live
Team XX1 AXS (Carbon Wheels)
Pro X01
Pro XT/XTR
Race X01
Race XT
Team Frame Kit - Fox Live
Team Frame
Starting Price
$17,999.00
$14,999.00
$13,999.00
$16,999.00
$11,999.00
$10,999.00
$9,499.00
$8,999.00
$7,399.00
$5,650.00
Frame
Mach 5.5
Mach 5.5
Mach 5.5
Mach 5.5
Mach 5.5
Mach 5.5
Mach 5.5
Mach 5.5
Mach 5.5
Mach 5.5
Material
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Carbon
Wheel Size
27.5"
27.5"
27.5"
27.5"
27.5"
27.5"
27.5"
27.5"
27.5"
27.5"
Rear Shock
Fox Factory Live Valve
Fox Factory Live Valve
Fox Factory Live Valve
Fox Factory Float DPX2
Fox Factory Float DPX2
Fox Factory Float DPX2
Fox Performance Float DPS
Fox Performance Float DPS
Fox Factory Live Valve
Fox Factory Float DPX2
Fork
Fox Factory Live 36 27.5", 44mm offset, FIT LIVE - 160mm
Fox Factory Live 36 27.5", 44mm offset, FIT LIVE - 160mm
Fox Factory Live 36 27.5", 44mm offset, FIT LIVE - 160mm
Fox Factory 36 27.5", 44mm offset, FIT4 – 160mm
Fox Factory 36 27.5", 44mm offset, FIT4 - 160mm
Fox Factory 36 27.5", 44mm offset, FIT4 - 160mm
Fox Performance 36 27.5", 44mm offset, GRIP - 160mm
Fox Performance 36 27.5", 44mm offset, GRIP - 160mm
Fox Factory Live 36 27.5", 44mm offset, FIT LIVE - 160mm
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Headset
Pivot Precision Sealed Cartridge
Pivot Precision Sealed Cartridge
Pivot Precision Sealed Cartridge
Pivot Precision Sealed Cartridge
Pivot Precision Sealed Cartridge
Pivot Precision Sealed Cartridge
Pivot Semi-Sealed Cartridge
Pivot Semi-Sealed Cartridge
Pivot Precision Sealed Cartridge
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Rear Derailleur
Sram XX1 Eagle AXS 12-Speed
Sram X01 Eagle 12-Speed
Shimano XTR M9100 SGS 12-Speed
Sram XX1 Eagle AXS 12-Speed
Sram X01 Eagle 12-Speed
Shimano XTR M9100 SGS 12-Speed
Sram X01 Eagle 12-Speed
Shimano XT M8100 SGS 12-Speed
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-
Shifter
Sram XX1 Eagle AXS 12-Speed
Sram X01 Eagle 12-Speed
Shimano XT M8100 ISPEC EV 12-Speed
Sram XX1 Eagle AXS 12-Speed
Sram X01 Eagle 12-Speed
Shimano XT M8100 ISPEC EV 12-Speed
Sram GX Eagle 12-Speed
Shimano SLX M7100 ISPEC EV 12-Speed
-
-
Brakes
Sram G2 Ultimate 4-piston
Sram G2 RSC 4-piston
Shimano XT M8120 4-piston
Sram G2 Ultimate 4-piston
Sram G2 RSC 4-piston
Shimano XT M8120 4-piston
Sram Guide RE 4-piston
Shimano SLX M7120 4-piston
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Crankset
Sram XX1 Eagle DUB SL 32t
Sram X01 Eagle DUB 32t
Race Face Æffect R 32t
Sram XX1 Eagle DUB SL 32t
Sram X01 Eagle DUB 32t
Race Face Æffect R 32t
Sram Descendant 7k Eagle DUB 32t
Race Face Ride 32t
-
-
Handlebar
Phoenix Team Low Rise Carbon - 760mm
Phoenix Team Low Rise Carbon - 760mm
Phoenix Team Low Rise Carbon - 760mm
Phoenix Team Low Rise Carbon - 760mm
Phoenix Team Low Rise Carbon - 760mm
Phoenix Team Low Rise Carbon - 760mm
Phoenix Race Low Rise Aluminum - 780mm
Phoenix Race Low Rise Aluminum - 780mm
-
-
Grips
Phoenix Factory Lock-On
Phoenix Factory Lock-On
Phoenix Factory Lock-On
Phoenix Factory Lock-On
Phoenix Factory Lock-On
Phoenix Factory Lock-On
Phoenix Factory Lock-On
Phoenix Factory Lock-On
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-
Stem
Phoenix Team Enduro/Trail
Phoenix Team Enduro/Trail
Phoenix Team Enduro/Trail
Phoenix Team Enduro/Trail
Phoenix Team Enduro/Trail
Phoenix Team Enduro/Trail
Phoenix Team Enduro/Trail
Phoenix Team Enduro/Trail
-
-
Seatpost
Rock Shox Reverb AXS 100mm (XS), 125mm (SM), 150mm (MD-XL)
Fox Transfer Factory Series 100mm (XS), 125mm (SM), 150mm (MD-LG), 175mm (XL)
Fox Transfer Factory Series 100mm (XS), 125mm (SM), 150mm (MD-LG), 175mm (XL)
Rock Shox Reverb AXS 100mm (XS), 125mm (SM), 150mm (MD-XL)
Fox Transfer Factory Series 100mm (XS), 125mm (SM), 150mm (MD-LG), 175mm (XL)
Fox Transfer Factory Series 100mm (XS), 125mm (SM), 150mm (MD-LG), 175mm (XL)
Fox Transfer Performance Elite 100mm (XS), 125mm (SM), 150mm (MD-LG), 175mm (XL)
Fox Transfer Performance Elite 100mm (XS), 125mm (SM), 150mm (MD-LG), 175mm (XL)
-
-
Saddle
Phoenix WTB Team High Tail Trail (XS, SM), Phoenix WTB Team Vigo (MD-XL)
Phoenix WTB Pro High Tail Trail (XS, SM), Phoenix WTB Pro Vigo (MD-XL)
Phoenix WTB Pro High Tail Trail (XS, SM), Phoenix WTB Pro Vigo (MD-XL)
Phoenix WTB Team High Tail Trail (XS, SM), Phoenix WTB Team Vigo (MD-XL)
Phoenix WTB Pro High Tail Trail (XS, SM), Phoenix WTB Pro Vigo (MD-XL)
Phoenix WTB Pro High Tail Trail (XS, SM), Phoenix WTB Pro Vigo (MD-XL)
Phoenix WTB Race High Tail Trail (XS, SM), Phoenix WTB Race Vigo (MD-XL)
Phoenix WTB Race High Tail Trail (XS, SM), Phoenix WTB Race Vigo (MD-XL)
-
-
Cassette
Sram XG-1299 10-52t
Sram XG-1275 10-52t
Shimano XT M8100 10-51t
Sram XG-1299 10-52t
Sram XG-1275 10-52t
Shimano XT M8100 10-51t
Sram XG-1275 10-52t
Shimano SLX M7100 10-51t
-
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Wheels
Reynolds Blacklabel Enduro Wide Trail w/ Industry Nine hub, 34mm - 27.5" 15x110 F/12x148 R
DT Swiss M1700 w/ DT Swiss 350 hub
DT Swiss M1700 w/ DT Swiss 350 hub
Reynolds Blacklabel Enduro Wide Trail w/ Industry Nine hub, 34mm - 27.5" 15x110 F/12x148 R
DT Swiss M1700 w/ DT Swiss 350 hub
DT Swiss M1700 w/ DT Swiss 350 hub
DT Swiss M1900 w/ DT Swiss 370 hub, 30mm - 27.5” 15x110 F/12x148 R
DT Swiss M1900 w/ DT Swiss 370 hub, 30mm - 27.5” 15x110 F/12x148 R
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-
Wheel Upgrades
-
Reynolds Blacklabel Enduro Wide Trail w/ Industry Nine hub, 34mm - 27.5" 15x110 F/12x148 R
Reynolds Blacklabel Enduro Wide Trail w/ Industry Nine hub, 34mm - 27.5" 15x110 F/12x148 R
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Reynolds Blacklabel Enduro Wide Trail w/ Industry Nine hub, 34mm - 27.5" 15x110 F/12x148 R
Reynolds Blacklabel Enduro Wide Trail w/ Industry Nine hub, 34mm - 27.5" 15x110 F/12x148 R
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-
-
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Tires
Maxxis Minion DHF 27.5" x 2.5" TR, EXO Maxxis Dissector 27.5" x 2.4" TR, EXO
Maxxis Minion DHF 27.5" x 2.5" TR, EXO Maxxis Dissector 27.5" x 2.4" TR, EXO
Maxxis Minion DHF 27.5" x 2.5" TR, EXO Maxxis Dissector 27.5" x 2.4" TR, EXO
Maxxis Minion DHF 27.5" x 2.5" TR, EXO Maxxis Dissector 27.5" x 2.4" TR, EXO
Maxxis Minion DHF 27.5" x 2.5" TR, EXO Maxxis Dissector 27.5" x 2.4" TR, EXO
Maxxis Minion DHF 27.5" x 2.5" TR, EXO Maxxis Dissector 27.5" x 2.4" TR, EXO
Maxxis Minion DHF 27.5" x 2.5" TR, EXO Maxxis Dissector 27.5" x 2.4" TR, EXO
Maxxis Minion DHF 27.5" x 2.5" TR, EXO Maxxis Dissector 27.5" x 2.4" TR, EXO
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Rotors
Sram Centerline CenterLock - 180mm Sram Centerline CenterLock - 180mm
Sram Centerline CenterLock - 180mm Sram Centerline CenterLock - 180mm
Shimano XT CenterLock - 180mm Shimano XT CenterLock - 180mm
Sram Centerline CenterLock - 180mm Sram Centerline CenterLock - 180mm
Sram Centerline CenterLock - 180mm Sram Centerline CenterLock - 180mm
Shimano XT CenterLock - 180mm Shimano XT CenterLock - 180mm
Sram Centerline 6-bolt - 180mm Sram Centerline 6-bolt - 180mm
Shimano SLX 6-bolt - 180mm Shimano SLX 6-bolt - 180mm
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Chain
Sram XX1 Eagle 12-Speed
Sram X01 Eagle 12-Speed
Shimano CN-M8100 12-Speed
Sram XX1 Eagle 12-Speed
Sram X01 Eagle 12-Speed
Shimano CN-M8100 12-Speed
Sram GX Eagle 12-Speed
Shimano CN-M7100 12-Speed
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Geometry & Sizing

We strive to build the best-performing cycling products in the world.

 Mach 5.5 Carbon Geometry & Sizing
Extra SmallXS
SmallSM
MediumMD
LargeLG
Extra LargeXL
ASeat Tube Length (C-T)
35.56 cm
39.37 cm
42.55 cm
45.72 cm
49.53 cm
BTop Tube Length
55.78 cm
58.39 cm
61.67 cm
63.93 cm
66.70 cm
CHead Tube Length
8.99 cm
10.49 cm
11.51 cm
12.50 cm
13.49 cm
DHead Tube Angle
66.5º
66.50º
66.50º
66.50º
66.50º
ESeat Tube Angle
74.25º
74.25º
74.25º
74.25 cm
74.25º
FChain Stay Length
43.00 cm
43.00 cm
43.00 cm
43.00 cm
43.00 cm
GBottom Bracket Height
34.04 cm
34.04 cm
34.04 cm
34.04 cm
34.04 cm
HStandover Height
68.58 cm
69.04 cm
69.09 cm
69.16 cm
71.12 cm
IWheelbase
111.63 cm
114.25 cm
117.65 cm
120.04 cm
122.94 cm
Stack
58.24 cm
59.64 cm
60.55 cm
61.49 cm
62.43 cm
Reach
38.99 cm
41.00 cm
43.99 cm
46.00 cm
48.49 cm

Reviews

Read the latest on the Mach 5.5 Carbon.

Mach 5.5 Carbon
Mach 5.5 Carbon
Mach 5.5 Carbon

Engineer's Corner

Get everything you need to know about the Mach 5.5 Carbon.

  • 140mm of supple-yet-efficient dw‐link® suspension
  • Equipped with a burly Fox 36 160mm-travel fork
  • 27.5” wheels with extra clearance for up to 2.6” tires
  • Long and low geometry for a confident, stable stance
  • Short 430mm (16.9”) chainstays for snappy cornering
  • 12 x 148mm Boost rear spacing for additional stiffness and control
  • Every size clears a full size water bottle inside the front triangle
  • Hassle-free, full-length, internal cable routing, fully Di2 compatible
  • Front derailleur compatible
  • Fits nearly all riders (everyone between 4'11" and 6'7"+)
Which size bike should I purchase?
To ensure the best sizing, we recommend that you visit your local Pivot dealer to get a professional fit and refer to our geometry chart to check your measurements. However, we can provide a rough guideline:

X-Small: 4'11" – 5'4"

Small: 5'4" – 5'8"

Medium: 5'8" – 5'11"

Large: 5'11" – 6'3'

X-Large: 6'2"

We suggest that you pick your Mach 5.5 Carbon size based on your riding style. The Mach 5.5 Carbon features trail bike long and low geometry with both shorter seat tube and head tube measurements per size – this geometry means that most riders can go up or down a size and should base their choice on riding-style, reach and stem length preferences.
How do I set the sag on my bike?
We make it easy to get the best ride out of your Pivot bike with a simple sag indicator already installed on your bike, and this follow-along video featuring our own Bernard Kerr:
https://vimeo.com/pivotcycles/sag
How much does it weigh?
Variables in frame size, discrepancies in scale calibrations, and method of weighing (with or without pedals and such) all lead to inaccurate comparisons, so we choose not to publish our bike weights. Pivot bicycles are among the lightest available, but the weight is only one of many factors that make a great bicycle. Other aspects such as frame stiffness, strength, durability, and ride quality are just as important as weight to our engineers when designing our Hollow Core Carbon and aluminum frames. Instead of comparing grams online, we suggest you visit your local Pivot dealer and see our attention to detail, smart, high value spec, and class leading features. Bring a scale if you’d like, but take just one demo ride and you’ll feel why Pivot Cycles are the most well-rounded, highest performing bicycles on the market and in many cases, yes, it’s the lightest as well.
How much does it weigh?
Variables in frame size, discrepancies in scale calibrations, and method of weighing (with or without pedals and such) all lead to inaccurate comparisons, so we choose not to publish our bike weights. Pivot bicycles are among the lightest available, but the weight is only one of many factors that make a great bicycle. Other aspects such as frame stiffness, strength, durability, and ride quality are just as important as weight to our engineers when designing our Hollow Core Carbon and aluminum frames. Instead of comparing grams online, we suggest you visit your local Pivot dealer and see our attention to detail, smart, high value spec, and class leading features. Bring a scale if you’d like, but take just one demo ride and you’ll feel why Pivot Cycles are the most well-rounded, highest performing bicycles on the market and in many cases, yes, it’s the lightest as well.
Can I use a dropper post with this frame?
Yes, internally routed dropper posts are compatible with the Mach 5.5 Carbon.
What dropper post length should I use?
There are limitations that each dropper post have for each frame size based on the rider’s saddle height, so it is important to check fit before choosing the travel and model of dropper post for your Mach 5.5 Carbon. Use the Dropper Fit Guide under the Tech Specs section to help identify the right post length.
Will a large water bottle fit on my bike?
Yes, this frame features two sets of water bottle mounts on the small to extra large frame sizes. One mount is inside the front triangle and the other is underneath the down tube. Every size clears a full size water bottle inside the front triangle.
What is the hub/wheel spacing?
The Mach 5.5 Carbon uses Boost 148mm x 12mm hub/wheel spacing. This hub design has wider flanges, so you cannot change the end caps to convert an existing 135mm, 142mm, 150mm, or 157mm hub.
What wheel sizes are compatible?
27.5” only
What is the thread pitch on the rear axle?
We use a 1.5 thread pitch on the rear thru axle. You can order one through our online store.
How wide of a tire can I run on the Mach 5.5 Carbon?
You can fit 27.5” tires up to 2.6” inches.
What is the size of the seatpost?
30.9mm
What is the seat tube insertion depth on the Mach 5.5?
XS - 195mm

S - 225mm

M - 255mm

L - 280mm

XL - 280mm

*Please check seat post measurements carefully before installing the post.
What is the size of the seat clamp?
34.9mm (or 35mm as some manufacturers call it)
What front derailleur does the Mach 5.5 Carbon use?
An e-type side-swing style front derailleur - Shimano produces the e-type side-swing front derailleur in Deore
What crank and bottom bracket will work with my bike?
All cranks designed for the Boost system and use a Pressfit BB92 bottom bracket will work on your Mach 5.5 Carbon.
Can I use a non-Boost crankset?
You can use non-Boost:

Race Face Next SL 1x cranks
Shimano XT and XTR 1x11 cranks (with 30t or 32t)
Shimano XT and XTR 2x11 cranks (with 24t/34t or 26t/36t)

There may be other 2x non-Boost cranksets available that will work, thought it will depend on the chainline and chainring size. If the chainline is not out far enough, the front derailleur clearance may be tight when shifting in to the small ring – the front derailleur mount has been shifted outwards to accommodate the Boost design.
What is the narrowest Q-Factor crank I can run?
163mm
Can I mount a chain guide on my Mach 5.5 Carbon?
Yes. The Mach 5.5 Carbon features ISCG05 mounts on the frame. Most upper guides on the market will fit or some of the more compact versions that attach to an E-Type front derailleur mount will also work. For full upper and lower guides, we recommend the MRP AMG.
What headset do I need?
Zero stack (ZS) 44mm top and ZS 56mm bottom (or a Chris King Inset 2)
What is the largest rotor I can fit?
180mm
Do I need a rear brake adapter?
No rear brake adapter is needed for a 180mm rotor.
What travel fork can I use?
The Mach 5.5 Carbon was designed for fork lengths between 150mm-160mm.
What is the fork offset?
44mm
What is the eye-to-eye shock length and stroke length?
Eye to eye: 7.875”

Stroke: 2”
What do I need to know if I want to run a different brand shock?
You’ll need the proper shock mounting hardware. For the front of the shock, the hardware is 8mm x 36mm. There is no hardware on the rear of the shock, the spacer hardware and bushing will need to be removed as the rocker mounts directly to the shock body. Some shocks may have a different spec then the Fox shock that comes on the bike and may not fit properly. Also, as we cannot test every shock on the market, therefore riders assume some risk if they choose a shock that does not fit properly or is not tuned correctly for the bike. The frame is designed around a large volume air can with medium compression valving and medium rebound damping.
Can I run a Cane Creek Double Barrel Air shock?
Yes, as long as you order the correct eyelet size (15mm).
Can I put a coil-over shock on my Mach 5.5 Carbon?
No, this bike was designed to work with the progressiveness of an air spring. A coil-over shock (even one with separate bottoming control) does not offer the progressive spring curve that the Mach 5.5 Carbon requires. Running a coil-over shock will result in hard bottoming and damage to the frame.
What are the torque specs?
A detailed PDF of the torque specs can be found in the Tech Specs section.
How do I set sag?
You set sag just as you would on regular suspension but with the Live Valve system turned off, so you get accurate readings. We make it easy to get the best ride out of your Pivot bike with a simple sag indicator already installed on your bike, and this follow-along video featuring our own Bernard Kerr:

https://vimeo.com/pivotcycles/sag
How long does the battery last?
Battery life is highly dependent on Live Valve settings and terrain. Average life ranges between 16 and 20 hours. For most riders, that covers several weeks of riding.
How long does it take to charge?
Charge times range between 1.5 and 2 hours depending on the power source. If you forget to charge the system before a ride it only takes 15 minutes to get enough power for a 2-hour ride.
How do I charge it?
The Live battery can be charged on or off the bike and is charged using a standard micro-USB cable.
What happens when the battery dies?
When the system detects a low battery it goes into open mode and shuts down.
Can I ride Live Valve with the system off?
Yes. Riding Live Valve powered off is just like riding your bike with the suspension in the open mode. Pivot’s awesome dw-link suspension always offers class-leading performance with the system on or off.
Can I mount Live Valve to a non-integrated bike?
No. the Live Valve system requires an accelerometer integrated near the rear axle, system mounting, and suspension tuning specific to the bike design.
Is Live Valve waterproof?
Yes, within reason. Things like washing your bike, riding in the rain or normal puddles and small water crossings are fine. We do not recommend total submersion or a direct blast of water from a pressure washer – both could push water past seals and compromise the electronic system.
Do I have to shut Live Valve off or does it do it automatically?
If you forget to turn the system off, Live Valve shuts off automatically if motion is not sensed for 1.5 hours. However, it is best to turn it off manually for battery charge preservation.
Can I add Live Valve to my current Mach 5.5?
Yes, all Mach 5.5 frames are fully compatible, and Fox offers a complete preprogrammed system that is specific to the Mach 5.5. Please see your authorized Pivot dealer for information.