Spark Exhaust Grid-O Silencer Pair Ducati Panigale V4 (2018-2024) GDU8839ST
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Both Grid-O silencers from Spark's underseat kits for the Panigale V4, sold as a pair. Spark lists this as a replacement part, which is the polite way of saying it is what you order after the bike went down or after a season of heat cycles left the packing tired.
Key Features
- Pair of Grid-O titanium silencers for Spark's Panigale V4 underseat kits.
- Supplied as two, because on a 2-1-2 layout you never need one.
- Mesh end caps and visible TIG weld seams — the Grid-O signature.
- Titanium sleeve, perforated inner tube and inner end cap.
- Replacement part: no link pipe, no collector, no hardware.
Sold in Pairs for a Reason
A 2-1-2 underseat system feeds two silencers from one collector. Replace only one and you have two cases with different packing density, different flow resistance and — over a session — a measurably uneven exhaust note. Spark sells them together because a matched pair is the only configuration that behaves predictably.
If one of yours is damaged and the other is a year old, replacing both is not upselling. It is the difference between a system that sounds like it left the factory and one that does not.
When Silencers Wear Out
Race silencers are consumables. The absorption packing inside compresses and degrades with heat and vibration, and a case that measured 105 dB when new will creep upward over a season of track days. That is why scrutineering catches bikes that passed the year before with the same exhaust fitted.
Visible TIG seams, incidentally, make a damaged case easier to assess: a crack near a weld is obvious on a Grid-O in a way it is not on a polished silencer.
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 Dyno equivalent is GDU8847ST. These will not fit the lateral single-silencer layouts.
Road Approval
None. Competition silencers with no certificate of their own.
Specifications
- Part number: GDU8839ST
- Type: Silencer pair, underseat
- Design: Grid-O
- Material: Titanium, visible TIG welds
- Quantity: 2 silencers
- Supplied as: replacement part, no link pipe or hardware
- 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
| Part number | GDU8839ST |
|---|---|
| Type | Silencer |
| Silencer design | Grid-O |
| Material | Titanium |
| Fitment | Ducati V4 / V4 S / V4 R / STREETFIGHTER V4 (2018-2023) |
| Road approval | None — track use only |
| Origin | Made in Italy |
- Ducati STREETFIGHTER V4
- Ducati Panigale V4
- Ducati Panigale V4 R
- Ducati Panigale V4 S
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// Spark Exhaust
Spark Exhaust Grid-O Silencer Pair Ducati Panigale V4 (2018-2024) GDU8839ST

Tech specs
- Part number
- GDU8839ST
- Type
- Silencer
- Silencer design
- Grid-O
- Material
- Titanium
- Fitment
- Ducati V4 / V4 S / V4 R / STREETFIGHTER V4 (2018-2023)
- Road approval
- None — track use only
- Origin
- Made in Italy
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
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