Spark Exhaust Dyno Racing 3/4 Kit with Pre-Silencer Box Ducati Panigale V2 955 / Streetfighter V2 (2020-2024), 959 (2016-2019) GDU8850T

Forty percent lighter than the original, and Spark publishes the decibels to three readings. The 3/4 kit for the Ducati V2 pairs a TIG-welded stainless pre-silencer box with the Dyno silencer and its red anodised end cap — and it removes the catalytic converter, which changes what the purchase involves.

Key Features

• Racing 3/4 kit for the Ducati Panigale V2 955/959 and Streetfighter V2, 2016 to 2024.
• 5.3 kg against 8.8 kg standard — about 40 percent lighter.
• AISI 304 stainless racing pre-silencer box with a TIG-welded segmented fitting.
• Dyno silencer with a red anodised end cap.
• 103 dB with the dB killer, 105 dB without, at 5,375 rpm.
• Removes the catalytic converter — an ECU remap is necessary.

Three Numbers, Including the Standard One

Spark measured this kit against the standard exhaust at the same engine speed and printed all three figures: stock 102 dB at 5,375 rpm, this kit 103 dB with the dB killer fitted, 105 dB without it.

That is an unusually honest set of numbers. One decibel over standard with the insert in place is a very small change for a system that is not homologated — and it tells you that what this kit changes is the character of the sound rather than only its volume. Manufacturers rarely publish the figure their product has to beat.

The Remap Is Not Optional

Spark states it directly: the 3/4 kit removes the original catalytic converter, so it is not homologated and it is necessary to remap the ECU. The company also recommends that a professional mechanic or tuner carries out the installation.

On a Ducati V2 that is not a formality. Removing the converter changes what the lambda sensors see, and an engine left to run on the standard map will run lean under load. Budget the remap into the purchase rather than treating it as something to arrange later.

What the Box Buys

The pre-silencer box is AISI 304 stainless with a TIG-welded segmented fitting, and Spark's description of what it does is worth quoting: it replaces the original bulky exhaust and gives the bike a dark and deep voice without being too loud.

That is the reason the readings stay close to standard. A racing 3/4 system without an expansion chamber ahead of the silencer would be a great deal louder. Spark also claims a large increase in torque throughout the acceleration curve rather than a peak figure — which is the more useful claim on a twin.

Fitment & Compatibility

Ducati Panigale V2 955 and Streetfighter V2 955, 2020 through 2024, and the Panigale 959 from 2016 through 2019. The full titanium underseat systems for the same machines are GDU8832T with Grid-O silencers and GDU8833T with Moto GP. To reinstall the original lambda sensors on those systems, the 0CAVO002 extension cable is required.

Road Approval

None. The kit removes the catalytic converter and is expressly not homologated. Closed circuits only.

Specifications

• Part number: GDU8850T
• Type: 3/4 racing kit
• Box: AISI 304 stainless, TIG-welded segmented fitting
• Silencer: Dyno with red anodised end cap
• Spark weight: 5.3 kg
• Standard weight: 8.8 kg
• Sound level: 103 dB with dB killer / 105 dB without, at 5,375 rpm (standard: 102 dB)
• Catalytic converter: removed
• ECU: remap necessary
• Fitment: Ducati Panigale V2 955 / Streetfighter V2 (2020-2024), 959 (2016-2019)
• Road approval: None — racing use only
• Manufacturer: Spark Exhaust Technology, Mantova, Italy