⟲ 360° — drag meThe facts.
| Part number | GHO8837T |
|---|---|
| Type | Full system |
| Silencer design | Moto GP |
| Material | Titanium |
| Sound level | 112 dB at 6,500 rpm |
| Fitment | Honda CBR 1000 RR-R (2020-2026) |
| Road approval | None — track use only |
| Origin | Made in Italy |
DescriptionThe whole story▼
The shortest case Spark builds, on a full titanium system. The Moto GP silencer is round, very short and has a large outlet diameter — Spark's own description — and it measures 112 dB at 6,500 rpm on the CBR 1000 RR-R.
Key Features
- Full titanium racing system for the Honda CBR 1000 RR-R, 2020 to 2026.
- 112 dB at 6,500 rpm without the dB killer.
- Moto GP silencer: round, very short, large outlet diameter.
- Titanium collector, diameters designed for this engine.
- Two decibels below the Grid-O version, ten above the Force Evo.
- dB killer can be added to reduce the level.
Two Decibels Apart, Worlds Apart in Looks
The Moto GP and the Grid-O sit almost together on Spark's scale — 112 dB against 114 — and both are well above what a measured circuit will accept. So the choice between them is not acoustic. It is a decision about shape.
The Grid-O is a conventional race silencer with its welds on show. The Moto GP is a stub: a short round case cut steeply at the outlet, the same idea as a prototype exhaust. On a CBR 1000 RR-R with its winglets and its very tall tail, the short case leaves the rear of the motorcycle almost empty. That is either exactly what you want or exactly what you do not.
Where the Sound Comes From
Spark says the large outlet diameter is there to emphasise the engine note, and on a short case that is how the physics works out. Absorption depends on how far the gas travels through packing; shorten the case and widen the exit and less energy is taken out on the way.
What reaches your ear is closer to what the engine actually produces. On a Honda four with this bore and this rev ceiling, that is a hard sound to describe and an easy one to recognise.
The Titanium Half of the Range
Spark offers this system with a titanium collector or, on the Force Evo versions, with an AISI 304 stainless one. The titanium collector costs noticeably more.
It is the part of the exhaust that runs hottest, sits lowest and is hardest to build, and it is where most of a four-cylinder system's weight lives. Choosing titanium there is choosing to spend the money on the half of the exhaust nobody photographs.
The dB Killer as an Afterthought
Spark states that a dB killer can be added to any of its silencers for this bike to bring the level down. On a system that measures 112 dB, that is worth reading carefully: an insert will reduce the reading, but it starts from a long way above where most circuits draw their line.
If you expect to be measured regularly, the Force Evo systems reach 102 dB with nothing in them at all. The Moto GP is for the days when nobody is holding a meter.
Fitment & Compatibility
Honda CBR 1000 RR-R, 2020 through 2026. The Grid-O version of the same titanium system is GHO8836T at 114 dB. The stainless-collector systems are GHO8835T with the 350 mm Force Evo at 102 dB and GHO8845T with the 450 mm case. The Moto GP silencer group for the Evo 2025 systems is GHO8837ST.
Road Approval
None. No EC certificate, no catalytic converter, and a level far above any road standard. Closed circuits without a decibel limit.
Specifications
- Part number: GHO8837T
- Type: Full racing system
- Collector: titanium
- Silencer: Moto GP, short case with large outlet
- Sound level: 112 dB at 6,500 rpm without dB killer
- dB killer: available, not fitted
- Fitment: Honda CBR 1000 RR-R (2020-2026)
- Road approval: None — racing use only
- Manufacturer: Spark Exhaust Technology, Mantova, Italy
What's includedEverything in the box▼
- 1x Titanium header
- 1x Titanium silencer
- 1x Removable dB killer
- 1x Complete mounting kit
- Exhaust springs
FitmentWhich bikes this fits▼
- Honda CBR 1000 RR-R
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