
The facts.
| Part number | GDU8847ST |
|---|---|
| Type | Silencer |
| Silencer design | Dyno |
| Material | Titanium |
| Fitment | Ducati V4 / V4 S / V4 R / STREETFIGHTER V4 (2018-2023) |
| Road approval | None — track use only |
| Origin | Made in Italy |
DescriptionThe whole story▼
The Dyno pair — Spark's sculpted case with carbon end caps, as fitted to the 102 dB underseat kit. Noticeably more than the Grid-O pair, and the reason is entirely in how the case is made.
Key Features
- Pair of Dyno titanium silencers with carbon end caps.
- The quietest of Spark's underseat options for this bike — 102 dB at 5,500 rpm in the complete kit.
- Sculpted profile rather than a rolled cylinder.
- Supplied as a matched pair for the 2-1-2 layout.
- Replacement part: silencers only.
What the Extra Money Buys
A Grid-O case is a rolled titanium cylinder with a mesh cap. A Dyno case is a formed profile — more tooling, more time per unit, and a shape that cannot be produced by rolling sheet around a mandrel. Spark describes the result in unusually direct language for an exhaust maker: pure design, technology and precious details, a piece of jewellery to customise the bike.
There is a functional side too. The formed shape packs more absorption volume into the same envelope under the tail, which is part of why the Dyno kit reads 102 dB where the Grid-O kit reads 105 dB.
Care
Spark's instruction for its cases is short and worth following: wash with water and rinse. Do not use degreasers or car-washing products. On a Dyno the finish is a large part of what you paid for, and aggressive chemistry takes it off faster than heat does.
Fitment & Compatibility
Fits Spark's 2-1-2 underseat kits for the Ducati Panigale V4, V4 S, V4 R (2018-2024) and the Streetfighter V4. The Grid-O pair GDU8839ST fits the same kits and costs noticeably less. Neither fits the lateral single-silencer layouts.
Road Approval
None. These are competition silencers and carry no certificate.
Specifications
- Part number: GDU8847ST
- Type: Silencer pair, underseat
- Design: Dyno
- Material: Titanium with carbon end caps
- Quantity: 2 silencers
- Supplied as: replacement part, silencers only
- Fitment: Spark 2-1-2 underseat kits for Ducati Panigale V4 / V4 S / V4 R / Streetfighter V4 (2018-2024)
- Road approval: None — track use only
- Manufacturer: Spark Exhaust Technology, Mantova, Italy
FitmentWhich bikes this fits▼
- Ducati STREETFIGHTER V4
- Ducati Panigale V4
- Ducati Panigale V4 R
- Ducati Panigale V4 S
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Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
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Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
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