Spark Exhaust Konix Evo Silencer BMW S1000RR (2019-2026) GBM8821ST
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Spark's newest silencer, sold on its own for riders who already have the collector. The Konix Evo is the one you buy when the exhaust is meant to be looked at as well as heard — a conical titanium case, edges cut rather than radiused, and a carbon end cap drawn with a design studio in Maranello.
Key Features
- Konix Evo titanium silencer for Spark's BMW S1000RR collectors.
- Conical case with sharp-edged transitions — Spark's current design language.
- Carbon end cap developed with a Maranello design studio.
- 107 dB on a Spark collector, measured without a dB killer.
- Titanium sleeve, perforated inner tube and inner end cap.
- Not a slip-on for the standard BMW exhaust — the inlet is cut for Spark pipework.
Why the Shape Costs Money
A conical shell is genuinely harder to make than a parallel one. The sheet has to be rolled to a changing radius, the seam runs at an angle rather than straight, and the sharp transitions Spark uses leave a poor weld nowhere to hide behind a radius. That difficulty is the whole point: the Konix Evo looks like it costs more because the process behind it does.
Underneath the styling the material choice is consistent with the rest of Spark's range — sleeve, perforated inner tube and inner end cap all titanium, which is where the weight advantage over a steel-cased muffler actually comes from.
Where It Sits in the Range
Spark builds three silencers around the S1000RR collector, and they are spaced by noise rather than by price. The Force Evo reads 104 dB, this one 107 dB, the Grid-O 114 dB. If your series publishes a limit, work backwards from it. If it does not, the Konix Evo is the middle ground — quieter than the Grid-O, more visually distinctive than the Force Evo.
Fitment & Compatibility
Fits Spark's S1000RR collectors — GBM8821R and GBM8823 in titanium, GBM8824R and GBM8825 in stainless steel. It will not meet the BMW manifold. For the bike: S1000RR (2019-2026), M1000RR and M1000R.
Road Approval
None. A competition silencer, supplied without any certificate, for closed-circuit use.
Specifications
- Part number: GBM8821ST
- Type: Silencer group
- Design: Konix Evo
- Material: Titanium case, carbon end cap
- Sound level: 107 dB on a Spark collector (no dB killer)
- Fits: Spark S1000RR collectors GBM8821R / GBM8823 / GBM8824R / GBM8825
- Fitment: BMW S1000RR / M1000RR / M1000R (2019-2026)
- Road approval: None — track use only
- Manufacturer: Spark Exhaust Technology, Mantova, Italy
| Part number | GBM8821ST |
|---|---|
| Type | Silencer |
| Silencer design | Konix Evo |
| Material | Titanium |
| Fitment | BMW S1000RR / M1000RR / M1000R (2019-2026) |
| Road approval | None — track use only |
| Origin | Made in Italy |
- BMW S1000RR
- BMW M1000RR
- BMW M1000R
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// Spark Exhaust
Spark Exhaust Konix Evo Silencer BMW S1000RR (2019-2026) GBM8821ST

Tech specs
- Part number
- GBM8821ST
- Type
- Silencer
- Silencer design
- Konix Evo
- Material
- Titanium
- Fitment
- BMW S1000RR / M1000RR / M1000R (2019-2026)
- 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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