MATTOC EXPERT, Boost, Gloss Black 27.5", 140mm Travel, Tapered Steerer, 37OS
Manitou MATTOC EXPERT 27.5″
Suspension fork with 140 mm travel, Boost axle and 37 mm offset.
Technical specifications
| Manufacturer / model | Manitou MATTOC EXPERT |
|---|---|
| Manufacturer part no. | 191-38578-A302 |
| Barcode | 844171092156 |
| Colour | Gloss Black |
| Wheel size | 27.5″ |
| Travel | 140 mm; internally adjustable 110–150 mm |
| Offset | 37 mm |
| Axle-to-crown at 140 mm | 532 mm |
| Spring | Expert Air with IVA |
| Compression | VTT-6 / VTT-6P; see manufacturer note |
| Rebound | TPC, adjustable open cartridge |
| Adjustments | Air pressure, air volume, rebound and compression |
| Steerer | 1.5″ tapered |
| Crown | Forged aluminium, hollow bore |
| Stanchions | 34 mm; butted 7000-series aluminium |
| Axle | Boost 15 × 110 mm Hexlock |
| Brake mount | 160 mm post mount |
| Maximum tyre width | 67 mm |
| E-bike compatible | Yes, according to manufacturer |
| Options | Fender kit, TSR |
| Published model-family weight | 1740–1760 g (specification); 1770 g (description) |
| 27.5″ axle-to-crown by travel | 110/120/130/140/150 mm: 502/512/522/532/542 mm |
Technology
Expert Air balances the air chambers during inflation. IVA tunes progression without extra parts. Internal spacers change travel and negative volume. The compression control affects high- and low-speed damping; TSR screws release casting pressure.
Manufacturer comparison: 27.5″ is 20 g lighter than before; over 19% stiffer comparing the new 150 mm version with the previous 160 mm version.
Manufacturer notes
Weight is not unambiguously assigned to this variant. Description: six-position VTT-6P; specification table: three positions Open/Trail/Lock plus open-mode low-speed adjustment. This discrepancy remains unresolved.
Documentation
Manitou / Hayes – Mattoc Expert · Service Guide · Service PDF / Exploded View
Manufacturer data checked on 7 November 2026.
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Wheel size
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Travel
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Offset
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Axle standard
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Steerer
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Model range
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Stanchion diameter