
Velopedia Bicycle Archive
2026 Pivot Mach 4 SL Expert XT Di2
Original manufacturer specifications including Expert XT Di2 drivetrain, 29" wheels, geometry for 5 published sizes.
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What Velopedia knows
- Model year
- 2026
- Category
- Mountain
- Original MSRP
- $7,499.00
- Sizes
- XS, S, M, L, XL
- Colors
- White Avalanche, Blue Stellar Fade
- Geometry
- 5 manufacturer sizes · Geometry context
- Record coverage
- 18 preserved details · 2 archived images · original MSRP · preserved geometry
- Archive ID
- 900000080
Frameset
| Frame Construction | Mach 4 SL — Ultralight Hollow Core Carbon Frame |
|---|---|
| Frame Material | Carbon Fiber |
| Fork | Fox Performance 34SL 29", 44mm offset, GRIP - 120mm |
| Rear Shock | Fox Performance Float |
Drivetrain
| Component Group | Expert XT Di2 |
|---|---|
| Shifters | Shimano XT Di2 M8200 ISPEC EV 12-Speed |
| Rear Derailleur | Shimano XT Di2 M8200 SGS 12-Speed |
| Crankset | Race Face Æffect R 34t |
| Cassette | Shimano XT M8200 10-51t |
| Chain | Shimano CN-M8100 12-Speed |
Brakes
| Brakes | Shimano XT M8200 2-piston; Rotors: Shimano RT-86 6-bolt - 180mm Shimano RT-86 6-bolt- 160mm |
|---|
Cockpit & Contact Points
| Headset | Pivot Precision Sealed Integrated Cartridge |
|---|---|
| Handlebar | Phoenix Team Flat Carbon - 760mm |
| Stem | Phoenix Race XC/Trail - 60mm |
| Saddle | Phoenix WTB Race Volt (Narrow Width) |
| Seatpost | JD/Pivot YSP23GLS |
Wheels & Tires
| Wheels | DT Swiss X1900 w/ DT Swiss 370 hub, 25mm - 29" 15x110 F/12x148 R |
|---|---|
| Wheel Size | 29" |
Size-specific frame data
Geometry
Manufacturer-published geometry normalized for consistent archival comparison. Effective top tube and reach remain separate measurements because they describe different aspects of fit.
| Measurement | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Seat tube | 355 mm | 394 mm | 420 mm | 460 mm | 505 mm |
| Effective top tube | 574 mm | 591 mm | 619 mm | 640 mm | 672 mm |
| Head tube | 85 mm | 92 mm | 105 mm | 110 mm | 135 mm |
| Head-tube angle | 66° | 66° | 66° | 66° | 66° |
| Seat-tube angle | 75° | 75° | 75° | 75° | 75° |
| Chainstay / rear center | 432 mm | 432 mm | 432 mm | 432 mm | 432 mm |
| Wheelbase | 1131 mm | 1149 mm | 1179 mm | 1201 mm | 1236 mm |
| Bottom-bracket drop | 38 mm | 38 mm | 38 mm | 38 mm | 38 mm |
| Bottom-bracket height | 336 mm | 336 mm | 336 mm | 336 mm | 336 mm |
| Reach | 410 mm | 425 mm | 450 mm | 470 mm | 495 mm |
| Stack | 583 mm | 590 mm | 602 mm | 606 mm | 629 mm |
| Standover height | 641 mm | 655 mm | 687 mm | 686 mm | 699 mm |
Geometry source: Pivot first-party geometry metafield ↗ Measurements can vary by configuration, wheel size, or flip-chip position where noted by the manufacturer.
Geometry tools
Analyze a published size
XS geometry
Archive context: Its stack of 583 mm sits somewhat lower than typical. The seat angle of 75° sits somewhat more relaxed than typical. Its wheelbase of 1131 mm sits somewhat shorter than typical.
Compared with 56 distinct mountain geometries in the XS-equivalent size cohort from model years 2024–2027 in the Velopedia archive.S geometry
Archive context: Its stack of 590 mm sits toward the lower end. The seat angle of 75° sits somewhat more relaxed than typical. Its wheelbase of 1149 mm sits somewhat shorter than typical.
Compared with 182 distinct mountain geometries in the Small-equivalent size cohort from model years 2024–2027 in the Velopedia archive.M geometry
Archive context: Its stack of 602 mm sits toward the lower end. The seat angle of 75° sits somewhat more relaxed than typical. The chainstay of 432 mm sits somewhat shorter than typical.
Compared with 183 distinct mountain geometries in the Medium-equivalent size cohort from model years 2024–2027 in the Velopedia archive.L geometry
Archive context: Its stack of 606 mm sits toward the lower end. The chainstay of 432 mm sits somewhat shorter than typical. The seat angle of 75° sits somewhat more relaxed than typical.
Compared with 180 distinct mountain geometries in the Large-equivalent size cohort from model years 2024–2027 in the Velopedia archive.XL geometry
Archive context: The chainstay of 432 mm sits toward the shorter rear-center end. Its stack of 629 mm sits toward the lower end. Its wheelbase of 1236 mm sits somewhat shorter than typical.
Compared with 153 distinct mountain geometries in the XL-equivalent size cohort from model years 2024–2027 in the Velopedia archive.Parts & serviceability
Find replacement parts
More qualified parts (3)
Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.
Used-bike inspection
If you’re buying this bike used
Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.
Follow the full used-bike inspection order →- FrameInspect the frame in bright light, especially around the head tube, bottom bracket, chainstays and clamped areas. Look for cracks, ripples, crushed sections or signs of a previous impact.Inspect the frame and fork →
- BrakesTest each brake separately and confirm it stops firmly and releases cleanly. Inspect the pads and braking surfaces for wear or contamination, and check the cables or hoses for damage.Inspect the brakes →
- SuspensionAsk when the fork and shock were last serviced. Check the stanchions for damage, look for oil at the seals, cycle both units through their travel and test the suspension pivots for play.Evaluate the suspension →
- DrivetrainConfirm every shift-system battery charges, every shift control works and the derailleur moves cleanly across the cassette. Make sure the matching shift-system charger is included, then measure chain wear and inspect the cassette teeth.Check drivetrain wear →
- Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
Bike-specific inspection checklist 22 checks based on 6 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2026 Pivot Mach 4 SL Expert XT Di2 · Mountain · Published sizes: XS, S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Mach 4 SL — Ultralight Hollow Core Carbon Frame · Fork: Fox Performance 34SL 29", 44mm offset, GRIP - 120mm
Suspension
Evaluate the suspension →Archived: Fork: Fox Performance 34SL 29", 44mm offset, GRIP - 120mm · Rear shock: Fox Performance Float
Drivetrain
Check drivetrain wear →Archived: Group: Expert XT Di2 · Shifters: Shimano XT Di2 M8200 ISPEC EV 12-Speed · Rear derailleur: Shimano XT Di2 M8200 SGS 12-Speed · Crankset: Race Face Æffect R 34t · Cassette: Shimano XT M8200 10-51t · Chain: Shimano CN-M8100 12-Speed
Brakes
Inspect the brakes →Archived: Brakes: Shimano XT M8200 2-piston; Rotors: Shimano RT-86 6-bolt - 180mm Shimano RT-86 6-bolt- 160mm
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29" · Wheels: DT Swiss X1900 w/ DT Swiss 370 hub, 25mm - 29" 15x110 F/12x148 R
Controls and contact points
Archived: Headset: Pivot Precision Sealed Integrated Cartridge · Handlebar: Phoenix Team Flat Carbon - 760mm · Stem: Phoenix Race XC/Trail - 60mm · Seatpost: JD/PIVOT YSP23GLS · Saddle: Phoenix WTB Race Volt (Narrow Width)
Before and during the test ride
Follow the full used-bike inspection order →Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.




