Manitou Mattoc Pro setup
The Mattoc Pro has two air pressures, not one. Put in your weight and travel for Manitou’s own pair of numbers, and fill the IRT chamber first.
Fill the irt chamber to 88 psi first, then the main chamber to 66 psi. Then measure sag.
Compression, spacers and limits
- Compression: Counted out from fully closed (clockwise). Low-speed (inner dial, 0–10): 0–5 clicks out for an aggressive tune, 6–10 for a compliant one. High-speed (outer dial, 0–4): 1–2 clicks out for aggressive, 4 (fully open) for compliant.
- Rebound: Turn the dial fully clockwise until it stops (that is zero, the most damping), then count the clicks back out counter-clockwise. The dial has 20 clicks. The numbers are Manitou’s rows for 120, 140, 160 … 240 lb, so a rider between rows lands between the numbers.
- Volume spacers: No spacers. End-of-travel ramp is set by the IRT chamber.
- Mattoc Pro Gen 3 (110–150 mm). Manitou prints values at 120, 140 … 240 lb. Older Mattocs have their own chart.
- Fill the IRT chamber first, then the main. Max 150 psi IRT, 120 psi main.
- Max pressure 120 psi.
- Source: Manitou Mattoc Pro Gen 3 set-up guide (2023, hayesbicycle)
Fix what you feel
Tap what your fork does. Fixes are for your MC². Change one thing at a time, then ride the same section again.
Harsh over roots and braking bumps
Too much air, or high-speed compression too firm.
- Check sag first. Under 20% means too much air in the main chamber.
- Open high-speed compression (the outer dial) 1 click counter-clockwise. Manitou says arm fatigue usually comes from too much high-speed.
- If it also feels stuck low, open rebound 1 click.
Dives under braking and on steep roll-ins
Not enough low-speed compression or mid-stroke support.
- Add low-speed compression (the inner dial) 1–2 clicks clockwise.
- Still diving? Add about 10% to the IRT pressure. IRT sets mid-stroke support.
- Sag past 25%? Add 2–3 psi to the main chamber.
Bottoms out hard on drops and big landings
Not enough compression or end-stroke support.
- Add low-speed compression 1–2 clicks. Manitou says it helps prevent bottoming on landings.
- Add 1 click of high-speed compression.
- Still bottoming? Add about 10% to the IRT pressure. The last 30 mm also has a built-in hydraulic bottom-out that isn’t adjustable.
Never uses full travel, even on big hits
Too much air, too much IRT, or too much compression.
- Check sag. Under 20% means too much main pressure.
- Take about 10% off the IRT pressure for a more linear spring.
- Open high-speed compression 1 click.
Bouncy, or clunks at full extension
Rebound is too fast.
- Add rebound 2 clicks (clockwise). The dial has 20 clicks, so one click is small.
Rides lower and lower through rough sections
Rebound is too slow, so the fork packs down.
- Open rebound 2 clicks (counter-clockwise).
Tell Suspend how it felt and it gives you the exact click to change on your Manitou Mattoc Pro. Free for your first bike.
Full Manitou Mattoc Pro reference
For the Mattoc Pro Gen 3 (MC² damper, 110–150 mm), from Manitou’s 2023 Mattoc Pro set-up guide. Older Mattoc Pros (up to 170 mm, rebound 0–9) have different pressures and dials in their own guides on hayesbicycle.zendesk.com.
How to fill the Manitou Mattoc Pro’s two air chambers
Two pressures. IRT chamber (cap on top of the fork): a second, higher-pressure chamber that controls mid-stroke support and bottom-out resistance. Main chamber (valve at the bottom of the fork): controls the start of the stroke and your sag. Fill IRT first, then main, with the fork unweighted. Add about 10% to IRT for more mid and end-stroke support, take off 10% for a more linear feel. Never go over 120 psi main or 150 psi IRT.
Manitou Mattoc Pro air pressure chart
| lb | kg | psi | IRT |
|---|---|---|---|
| under 130 | under 59 | 44 | 59 |
| 130–150 | 59–68 | 54 | 74 |
| 150–170 | 68–77 | 65 | 90 |
| 170–190 | 77–86 | 75 | 101 |
| 190–210 | 86–95 | 86 | 124 |
| 210–230 | 95–104 | 96 | 141 |
| 230–250 | 104–113 | 112 | 150 |
| lb | kg | psi | IRT |
|---|---|---|---|
| under 130 | under 59 | 42 | 56 |
| 130–150 | 59–68 | 51 | 70 |
| 150–170 | 68–77 | 61 | 85 |
| 170–190 | 77–86 | 70 | 95 |
| 190–210 | 86–95 | 80 | 116 |
| 210–230 | 95–104 | 89 | 132 |
| 230–250 | 104–113 | 104 | 148 |
| lb | kg | psi | IRT |
|---|---|---|---|
| under 130 | under 59 | 42 | 56 |
| 130–150 | 59–68 | 52 | 72 |
| 150–170 | 68–77 | 62 | 86 |
| 170–190 | 77–86 | 71 | 96 |
| 190–210 | 86–95 | 81 | 117 |
| 210–230 | 95–104 | 91 | 134 |
| 230–250 | 104–113 | 106 | 150 |
| lb | kg | psi | IRT |
|---|---|---|---|
| under 130 | under 59 | 38 | 51 |
| 130–150 | 59–68 | 48 | 65 |
| 150–170 | 68–77 | 56 | 78 |
| 170–190 | 77–86 | 66 | 88 |
| 190–210 | 86–95 | 74 | 107 |
| 210–230 | 95–104 | 84 | 123 |
| 230–250 | 104–113 | 97 | 138 |
psi. Source: Manitou Mattoc Pro Gen 3 set-up guide (2023, hayesbicycle).
Manitou Mattoc Pro rebound clicks by weight
| lb | MC² |
|---|---|
| under 130 | 14 |
| 130–150 | 12 |
| 150–170 | 10 |
| 170–190 | 8 |
| 190–210 | 6 |
| 210–230 | 4 |
| 230–250 | 2 |
Turn the dial fully clockwise until it stops (that is zero, the most damping), then count the clicks back out counter-clockwise. The dial has 20 clicks. The numbers are Manitou’s rows for 120, 140, 160 … 240 lb, so a rider between rows lands between the numbers. Push the fork down hard and let go. If it clunks or kicks back, rebound is too fast. If it stays low, it’s too slow. Manitou says to match front and rear wheel return speed.
Manitou Mattoc Pro sag in millimetres
| Travel | 20% (firm) | 25% (plush) |
|---|---|---|
| 110 mm | 22 mm | 28 mm |
| 120 mm | 24 mm | 30 mm |
| 130 mm | 26 mm | 33 mm |
| 140 mm | 28 mm | 35 mm |
| 150 mm | 30 mm | 38 mm |
Worked out from Manitou’s 20–25% sag range. Measure with the compression adjusters fully open, dressed to ride, weight spread across saddle, bars and pedals.
Manitou Mattoc Pro compression settings
| Damper | Start at |
|---|---|
| MC² | Counted out from fully closed (clockwise). Low-speed (inner dial, 0–10): 0–5 clicks out for an aggressive tune, 6–10 for a compliant one. High-speed (outer dial, 0–4): 1–2 clicks out for aggressive, 4 (fully open) for compliant. |
Manitou Mattoc Pro volume spacers
No spacers. End-of-travel ramp is set by the IRT chamber.
The Mattoc has no volume spacers or tokens to count. How hard it ramps up is set by the second air chamber, IRT. Travel is changed inside the fork and isn’t a tuning tool.
Which Manitou Mattoc Pro damper do I have?
- MC²: Red inner low-speed and black outer high-speed compression dials together on top, and a blue rebound dial.
The Mattoc Pro has one MC² damper: separate low-speed and high-speed compression dials and one rebound dial.
Questions
What air pressure should I run in my Manitou Mattoc Pro?
It depends on your weight and travel, and there are two numbers. A 170 lb rider is halfway between the 160 and 180 lb rows. At 140 mm that is about 61 psi main and 83 psi IRT. At 120 mm it is about 66 and 90. Fill the IRT chamber on top first, then the main chamber at the bottom. Max is 120 psi main and 150 psi IRT.
How much sag should a Manitou Mattoc Pro have?
Manitou’s pressures are built for 20–25% sag: 28–35 mm on a 140 mm fork. Measure standing on the pedals with your weight about 70% on the pedals and 30% on the bars. Adjust the pressure up or down to suit.
How many clicks of rebound on a Manitou Mattoc Pro?
It depends on your weight. A 160 lb rider starts at 10 clicks out from fully closed and a 180 lb rider at 8, so 170 lb is about 9. Lighter riders run more clicks out. The dial has 20 clicks. The table has every weight.
Does this work for my older Mattoc?
Only for the Mattoc Pro Gen 3 (110–150 mm, MC² damper). Older Mattoc Pros have different pressures and a 0–9 rebound dial, in their own guides on hayesbicycle.zendesk.com.
Related guides
Sources · last checked 2026-10-09
- Manitou Mattoc Pro Set-Up Guide, rev 1, 2/10/2023 (Hayes Performance Systems)
- Manitou Mattoc Gen 3 set-up guides index (hayesbicycle.zendesk.com)
- Hayes Bicycle EU: Mattoc Pro product page (travel range, IRT)
- Manitou Mattoc IRT Set-up Guide (2020, what the site chart currently follows)
- Manitou Mattoc Pro / Expert Set-up Guide (2014, older generation)
Starting points from the manufacturer’s charts, not a substitute for your fork’s manual. Always confirm with a sag measurement and stay under the max pressure.