High Performance Full Suspension Bike for Trail and Enduro Riding

Pivot Mach 4 SL Pro X0 Transmission Factory Float – Sea Foam Green

The Pivot Mach 4 SL Pro X0 Transmission Factory Float – Sea Foam Green is a premium full-suspension cross-country mountain bike designed for riders who demand fast acceleration, efficient climbing, precise handling, and high-end suspension performance.

Built around Pivot's lightweight Mach 4 SL carbon frame, the bike combines the efficiency of Pivot's DW-Link suspension with a FOX Factory suspension package and SRAM's wireless X0 Eagle Transmission drivetrain. The result is an XC bike that feels quick and responsive under power while remaining composed over technical singletrack.

The documented Pro X0 configuration uses 120 mm of front travel and 95 mm of rear travel, 29-inch wheels, a 34T chainring, and a 10–52T SRAM Transmission cassette.

Key Features

• Lightweight Mach 4 SL carbon frame

• Pivot DW-Link suspension platform

• 29-inch wheels

• 120 mm front travel

• 95 mm rear travel

• FOX Factory Step-Cast 34 fork

• FOX Factory Float rear shock

• SRAM X0 Eagle Transmission 12-speed drivetrain

• SRAM AXS Pod Controller

• SRAM X0 34T DUB crankset

• SRAM X0 1295 Eagle Transmission 10–52T cassette

• SRAM X0 Eagle Flattop chain

• SRAM Level Silver two-piston hydraulic brakes on the documented 2024 build

• Reynolds Blacklabel carbon wheel option

• Industry Nine Hydra hubs

• Maxxis Rekon/Rekon Race 29 × 2.4-inch tires on the carbon-wheel configuration

• FOX Transfer Factory dropper seatpost

• Phoenix carbon cockpit

• Sea Foam Green finish

Lightweight Mach 4 SL Carbon Frame

At the center of the bike is Pivot's Hollow Core carbon Mach 4 SL frame.

The frame uses size-specific carbon construction to achieve a balance of low weight, stiffness, and predictable handling. Pivot designed the Gen 3 Mach 4 SL around efficient XC performance while giving the chassis enough suspension capability for modern technical trails.

The frame incorporates internal cable routing, molded frame protection, modern Boost axle spacing, and generous bottle clearance. Its suspension architecture also allows different travel configurations using the same basic frame platform.

DW-Link Suspension

Pivot's DW-Link suspension system is designed to keep the Mach 4 SL efficient when pedaling while maintaining rear-wheel traction across rough terrain.

This Pro X0 configuration uses a FOX Factory Float rear shock with 95 mm of rear travel. Combined with the 120 mm fork, the setup gives the bike a balanced XC suspension package that favors climbing efficiency without making technical descents overly demanding.

The result is particularly useful for riders who spend long periods climbing but still want a controlled, active rear suspension system when the trail becomes rocky or uneven.

FOX Factory Step-Cast 34 Fork

The front suspension uses a FOX Factory Step-Cast 34 29-inch fork.

Fork Specifications

• 120 mm travel

• 44 mm offset

• Air spring

• GRIP SL damper on the documented 2024/2025 configuration

• 29-inch wheel compatibility

The Step-Cast chassis is designed to reduce unnecessary weight while retaining the stiffness needed for accurate steering. The 120 mm travel gives the Mach 4 SL useful control over roots, rocks, drops, and technical XC terrain.

FOX Factory Float Rear Shock

A FOX Factory Float air shock controls the rear suspension.

Working with the DW-Link suspension platform, the shock is designed to deliver controlled movement without compromising the bike's efficient pedaling characteristics. The documented Pro X0 build provides 95 mm of rear travel.

The air-sprung system can be adjusted to accommodate rider weight and riding style, while rebound tuning helps control the suspension's return speed.

SRAM X0 Eagle Transmission

One of the defining features of the build is its SRAM X0 Eagle Transmission 12-speed electronic drivetrain.

The Transmission system replaces traditional derailleur cable operation with wireless electronic shifting and is designed around a robust direct-mount rear derailleur.

Drivetrain Components

• SRAM X0 Eagle AXS 12-speed rear derailleur

• SRAM AXS Pod Controller

• SRAM X0 Eagle DUB crankset

• 34T chainring

• SRAM X0 1295 Eagle Transmission cassette

• 10–52T range

• SRAM X0 Eagle Flattop 12-speed chain

The 10–52T cassette gives the bike a wide gearing range, providing a low gear for steep climbs while retaining useful higher gears for faster XC sections.

The wireless AXS system also keeps the cockpit and frame free from conventional derailleur cable routing.

SRAM Hydraulic Disc Brakes

The documented 2024 Pro X0 build uses SRAM Level Silver two-piston hydraulic disc brakes.

This braking setup complements the Mach 4 SL's XC focus by providing controlled braking performance without the additional weight of a larger four-piston trail system.

The brake specification changed in later listings, however. The 2025 Pro X0 build is documented with SRAM Motive Silver four-piston brakes, so the exact brake equipment should be matched to the model year of the inventory unit.

Reynolds Blacklabel Carbon Wheel Option

The Factory Float carbon-wheel configuration is distinguished by its Reynolds Blacklabel carbon wheelset.

The documented 2024 carbon-wheel version uses:

• Reynolds Blacklabel 309 XC front rim

• Reynolds Blacklabel 289 XC rear rim

• Industry Nine Hydra hubs

• 29-inch wheels

• 30 mm front rim width

• 28 mm rear rim width

• 15 × 110 mm front spacing

• 12 × 148 mm rear spacing

These lightweight carbon rims help reduce rotating mass and complement the Mach 4 SL's fast XC character. Industry Nine Hydra hubs provide quick engagement, which can make repeated accelerations and technical climbing feel more immediate.

Important Wheel Configuration Note

Some listings for the Pro X0 Eagle Transmission use DT Swiss XR1700 aluminum wheels instead of the Reynolds carbon wheel option. The Reynolds/Industry Nine combination is the appropriate specification when the product is specifically identified as the Factory Float (Carbon Wheels) configuration.

Maxxis Tires

The carbon-wheel configuration uses a wider 29 × 2.4-inch Maxxis tire combination, rather than the 2.2-inch Ardent Race tires found on the standard aluminum-wheel build.

The documented carbon-wheel specification uses:

• Maxxis Rekon 29 × 2.4 in. front

• Maxxis Rekon Race 29 × 2.4 in. rear

• 3C compound on the Rekon specification

• Tubeless-ready construction

• EXO casing

• 120 TPI

The wider tires increase air volume and provide additional traction while remaining within the Mach 4 SL's approximately 2.4-inch tire-clearance limit.

FOX Transfer Factory Dropper

The bike comes equipped with a FOX Transfer Factory Series dropper seatpost.

The dropper lets the rider lower the saddle before steep descents, technical sections, and corners, giving greater freedom of movement and helping maintain a balanced body position.

Travel varies according to frame size, so the exact dropper length should be confirmed against the frame size of the specific bike.

Phoenix Carbon Cockpit

Pivot equips the Pro X0 build with a lightweight Phoenix cockpit.

Cockpit Components

• Phoenix Team Flat Carbon handlebar

• 760 mm width

• Phoenix Team XC/Trail stem

• 60 mm stem

• Phoenix Factory Lock-On grips

• Phoenix WTB Pro Volt narrow saddle

The carbon handlebar keeps cockpit weight low while providing a stable steering platform for fast XC riding and technical singletrack.

Practical Frame Features

The Mach 4 SL combines racing-oriented weight savings with features that make it practical for regular trail use.

Frame Highlights

• Hollow Core carbon construction

• DW-Link suspension

• Internal cable routing

• Pivot Precision Sealed Integrated Cartridge headset

• Molded rubberized frame protection

• Large water-bottle clearance

• 29-inch wheel platform

• Approximately 2.4-inch maximum tire clearance

• 15 × 110 mm front and 12 × 148 mm rear axle spacing

• UDH-compatible rear derailleur interface

The platform is designed around efficient XC handling while retaining enough tire and suspension capability for demanding modern singletrack.

Technical Specifications

*These specifications identify the Factory Float / Carbon Wheels configuration and the documented 2024 build. Later model years changed some components, most notably the brakes and carbon wheel/hub specification.

Available Sizes

The Mach 4 SL Pro X0 Transmission is offered in:

• XS

• Small

• Medium

• Large

• XL

The documented build uses the same 29-inch wheel platform across the size range.

Ideal Applications

The Pivot Mach 4 SL Pro X0 Transmission Factory Float is particularly suited for:

• Cross-country racing

• XC training

• Marathon mountain biking

• Fast singletrack

• Technical XC trails

• Long-distance rides

• Competitive trail riding

• Riders prioritizing acceleration and low weight

• Riders wanting electronic wireless shifting

• Riders looking for premium carbon-wheel performance

Why Choose the Mach 4 SL Pro X0 Transmission?

The Pivot Mach 4 SL Pro X0 Transmission Factory Float brings together a lightweight carbon chassis, efficient DW-Link suspension, premium FOX Factory components, and SRAM's high-performance electronic Transmission drivetrain.

The 120 mm FOX fork and 95 mm rear suspension provide a balanced XC setup, while the 29-inch wheels help maintain momentum across technical terrain. The SRAM X0 Eagle Transmission adds precise wireless shifting and a wide 10–52T gear range, making steep climbs easier without compromising high-speed trail performance.

The Reynolds Blacklabel carbon wheels with Industry Nine Hydra hubs further emphasize the bike's lightweight, responsive character. Combined with the FOX Transfer dropper and 2.4-inch tubeless-ready tires, the bike has considerably more trail versatility than a minimalist XC race build.

Finished in Sea Foam Green, this configuration is an excellent choice for riders who want a premium XC mountain bike that combines speed, efficiency, modern electronic shifting, and high-end carbon-wheel performance.

Package / Bike Configuration

The documented Factory Float carbon-wheel configuration includes:

• Pivot Mach 4 SL Hollow Core carbon frame

• FOX Factory Step-Cast 34 120 mm fork

• FOX Factory Float rear shock

• SRAM X0 Eagle AXS 12-speed rear derailleur

• SRAM AXS Pod Controller

• SRAM X0 Eagle DUB 34T crankset

• SRAM X0 1295 Eagle Transmission 10–52T cassette

• SRAM X0 Eagle Flattop 12-speed chain

• SRAM Level Silver hydraulic brakes on the documented 2024 configuration

• Reynolds Blacklabel 309/289 XC carbon wheelset

• Industry Nine Hydra hubs

• Maxxis Rekon / Rekon Race 29 × 2.4-inch tires

• FOX Transfer Factory dropper seatpost

• Phoenix Team Flat Carbon handlebar

• Phoenix Team XC/Trail stem

• Phoenix Factory Lock-On grips

• Phoenix WTB Pro Volt narrow saddle

• Pivot Precision Sealed Integrated Cartridge headset

• Sea Foam Green finish

Model-Year Specification Note

The Mach 4 SL Pro X0 Transmission Factory Float was offered across multiple model years, and individual components changed over time. The 2024 carbon-wheel specification uses GRIP SL fork damping, SRAM Level Silver two-piston brakes, Reynolds Blacklabel 309/289 carbon wheels, Industry Nine Hydra hubs, and Maxxis 2.4-inch tires.

The 2025 specification retains the 120/95 mm suspension layout and X0 Transmission drivetrain but changes to SRAM Motive Silver four-piston brakes and a different Reynolds Blacklabel wheel/hub configuration.

For a specific inventory unit, the manufacturer's build sheet should take precedence over generic model-year specifications.