⟲ 360° — drag meThe facts.
| Brand | Akrapovic |
|---|---|
| Part number | L-D9SO1 |
| Fitment | Ducati DesertX, Monster 937 and Monster 937 SP (2021–2024) |
| Part type | Optional link pipe / collector, replaces the stock pre-muffler |
| Material | High-grade stainless steel |
| Weight | 1.0 kg (stock 4.8 kg, saving 3.8 kg / 79.2 %) |
| Power | 102.6 PS (stock 98.9 PS, gain 4.4 PS at 8,600 rpm) |
| Torque | gain 5.6 Nm at 4,600 rpm |
| Installation | Approx. 40 minutes |
| Road approval | None — track use only |
DescriptionThe whole story▼
5.6 newton metres at 4,600 rpm. On a DesertX that is where the bike pulls out of a corner on a gravel road, and on a Monster 937 it is where the engine spends its life in town. This is a mid-range part, and the mid-range is where the Testastretta 937 wants help.
Key Features
- 5.6 Nm more at 4,600 rpm and 4.4 PS at 8,600 rpm
- 1.0 kg against the standard 4.8 kg: 3.8 kg and 79.2 per cent less
- Replaces the stock pre-muffler, where the catalytic converter sits
- More direct gas flow through high-grade stainless steel
- Covers three very different motorcycles on one platform
- Forty minutes to fit
- No road approval — circuit use only
Three Bikes, One Engine
Ducati's 937 cc Testastretta powers the DesertX adventure bike, the Monster roadster and the Monster SP. Three completely different machines, one exhaust route under the engine, one link pipe.
On the DesertX that matters more than on the Monsters. A big adventure bike carries its pre-muffler low where it is exposed to rocks, and 3.8 kg out of that position also takes a vulnerable component out of harm's way.
Where the Weight Was
Akrapovic describes the part as replacing the stock pre-muffler, which is where Ducati puts the catalytic converter. That single box accounts for 4.8 kg — nearly four of which are simply gone.
Removing it is also what produces the more direct gas flow the power figures come from, and what ends the type approval.
Stainless, Not Titanium
This pipe is high-grade stainless steel rather than titanium, which on a DesertX is the sensible material. It sits low, it gets hit by stones, and steel takes that better. The 79.2 per cent saving shows the weight was in the pre-muffler's construction rather than in the material of the pipe.
The DesertX Case
Ducati's DesertX is a 223 kg adventure bike with a 21 inch front wheel, and it is ridden off tarmac by people who bought it for that. Taking 3.8 kg out of the lowest, most exposed part of the exhaust is worth more there than the power figures suggest.
It is also one fewer thing to damage. A stock pre-muffler hanging under the engine is a large aluminium and steel box in the firing line of every rock.
Forty Minutes
Ducati routes the 937's mid-section along the right side under the engine, and it comes out with the bash plate removed. Forty minutes covers it.
Fitment and Compatibility
L-D9SO1 covers the Ducati DesertX from 2022, and the Monster 937 and Monster 937 SP from 2021, through 2024.
Road Approval
None. Removing the catalytic converter ends the type approval. This product does not meet emission compliance requirements for street or highway use.
Specifications
- Part number: L-D9SO1
- EAN: 3831126410230
- Fitment: Ducati DesertX, Monster 937, Monster 937 SP (2021–2024)
- Part type: optional link pipe / collector
- Material: high-grade stainless steel
- Weight: 1.0 kg (stock 4.8 kg, saving 3.8 kg / 79.2 %)
- Power: 102.6 PS (stock 98.9 PS, gain 4.4 PS at 8,600 rpm)
- Torque: gain 5.6 Nm at 4,600 rpm
- Installation time: approx. 40 minutes
- Road approval: none — track use only
- Country of manufacture: Slovenia
FitmentWhich bikes this fits▼
- Ducati DesertX (2022–2024)
- Ducati Monster 937 and Monster 937 SP (2021–2024)
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