Spark Exhaust Force 3/4 Kit Titanium Pipe 300 mm Silencer Kawasaki ZX-10R (2016-2020) GKA8817T

A three-quarter kit is the cheapest way onto a racing exhaust, because it leaves the collector on the motorcycle. Spark supplies the titanium pipe and a 300 mm Force silencer; the ZX-10R keeps the header it came with, and the catalytic converter comes out with the section that is replaced.

Key Features

• Three-quarter kit for the Kawasaki ZX-10R, 2016 to 2020.
• Titanium pipe and Force silencer, 300 mm.
• Fits with the original collector in place.
• Removes the catalytic converter.
• 106,5 dB.
• Racing part, not approved for road use.

What a Three-Quarter Kit Actually Replaces

The standard exhaust on this motorcycle runs header, catalytic mid-section, silencer. This article replaces the last two of those three with a titanium pipe and a Force can, and leaves the header alone.

The practical consequence is a shorter job on the bench and a much smaller invoice than a full system — and, for a bike that is still ridden on the road between track days, a change that can be reversed in an afternoon by putting the standard parts back.

106,5 Decibels

Spark measures this kit at 106,5 dB. That is a loud number by road standards and a workable one by circuit standards: it sits just under the 107 dB ceiling used by the French championship and the Endurance World Championship, but with almost nothing to spare.

If the events you attend measure at 105, this is not the kit. The full systems in Spark's ZX-10R range reach lower.

Three Hundred Millimetres Is Short

Most racing cans on a litre bike are 350 to 450 mm long, because length is how a silencer gets quiet. At 300 mm the Force in this kit is at the short end of Spark's range, and the 106,5 dB figure is the direct consequence.

What a short silencer buys is ground clearance and mass close to the centre of the motorcycle. On a ZX-10R being ridden hard on a circuit, a can that does not hang out past the tail is worth having — provided the noise number is one your event will accept.

The Catalyst Goes

Spark states it plainly: this kit is compatible with the original collector and it removes the catalyst. The converter lives in the mid-section, and the mid-section is what the titanium pipe replaces.

That is where most of the weight comes from, and it is also why the article carries no approval — an emissions component the motorcycle was type-approved with is no longer on the bike.

The Weight Figure

Spark's page for this code gives 2,5 kg against 7,0 kg for the parts it replaces. Take that as Spark's own number for the article: the same weight question on this motorcycle is answered differently in different places in their documentation, and this is the figure published on the article page itself.

Fitment & Compatibility

Kawasaki ZX-10R, 2016 to 2020. Full systems for the same machine: GKA8814T with a stainless collector. For the 2021-on ZX-10R and ZX-10RR, the equivalent three-quarter kit is GKA8854T and the full titanium system is GKA8853T.

Road Approval

None. Spark lists this kit as not approved. Closed course use only.

Specifications

• Part number: GKA8817T
• Type: Three-quarter kit, racing
• Pipe: titanium
• Silencer: Force, 300 mm
• Collector: original retained
• Catalytic converter: removed
• Noise: 106,5 dB
• Weight: 2,5 kg against 7,0 kg, as published by Spark for this code
• Road approval: none, racing part
• Fitment: Kawasaki ZX-10R (2016-2020)
• Manufacturer: Spark Exhaust Technology, Mantova, Italy