Spark Exhaust Force Evo Full Titanium Racing System 450 mm Kawasaki ZX-10R / RR (2021-2026) GKA8853T

Titanium collector, titanium silencer, nothing else in between. This is the top of Spark's ZX-10R range: a d.65 titanium manifold feeding a 450 mm Force Evo can, built to the specification the price list calls a WSBK replica.

Key Features

• Full titanium racing system for the Kawasaki ZX-10R and ZX-10RR, 2021 onwards.
• Titanium collector, 65 mm.
• Force Evo silencer, 450 mm, titanium.
• Built to meet circuit noise limits without a dB killer.
• WSBK-specification silencer length.
• Racing part, not approved for road use.

Why the Silencer Is 450 mm Long

Length is how a racing silencer gets quiet without a restrictor. Spark's problem is that European circuits enforce noise limits at scrutineering and the ceiling varies by championship and by engine — so the answer cannot be one silencer with an insert that riders remove after the check.

Instead Spark builds different silencers to different targets. The Force and Force Evo are the ones drawn to sit inside the 107 dB limit applied by the French championship and the Endurance World Championship. The Konix Evo goes to 113. All of them reach their figure as supplied, with no dB killer in the outlet.

A Collector That Is Also Titanium

Most racing systems at this level use a stainless collector, because it is cheaper and more robust. Spark builds this one in titanium at 65 mm, and that is the difference between GKA8853T at 2.561 euro and the systems below it.

The collector is the longest and heaviest section of any exhaust. Building it in titanium is the single most expensive way to take weight out of a motorcycle, and it is also the most effective.

What Spark Was Solving

The company describes a long development programme aimed at giving ZX-10R owners a full range — three-quarter kits and full systems, in different materials, with different silencers — precisely so that a rider can pick the article that fits their championship's noise rule rather than compromising performance to pass a measurement.

That is a different design brief from the usual aftermarket one, and it explains why the range has so many articles that look similar on a shelf.

What a WSBK Replica Means Here

Spark's price list calls this the WSBK replica, and the claim is about the specification rather than about a factory team's parts bin: d.65 titanium collector, 450 mm Force Evo silencer, no catalytic section, no valve, nothing in the outlet.

That is the configuration a Superbike-class machine runs when the rulebook allows a free exhaust and the circuit imposes a noise ceiling. It is not a homologated replica of any particular bike, and Spark does not say it is.

Fitment & Compatibility

Kawasaki ZX-10R and ZX-10RR, 2021 onwards. The three-quarter kit with the same Force Evo silencer is GKA8854T. Other silencer choices on this platform: Konix Evo GKA8847T, Grid-O GKA8848T, Force Evo GKA8849T. For the earlier ZX-10R the racing system is GKA8814T.

Road Approval

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

Specifications

• Part number: GKA8853T
• Type: Full system, racing
• Collector: titanium, 65 mm
• Silencer: Force Evo, 450 mm, titanium
• Construction: full titanium
• dB killer: not required to reach the design noise level
• Intended use: circuit, within championship noise limits
• Road approval: none, racing part
• Fitment: Kawasaki ZX-10R / ZX-10RR (2021-2026)
• Manufacturer: Spark Exhaust Technology, Mantova, Italy