Spark Exhaust Force Full System 350 mm Titanium Collector BMW S1000RR (2015-2018) GBM8803T

Seventeen euro more than the Moto GP system, and 1,2 kg heavier. That sounds like a bad trade until you look at why: the Force silencer in this kit is 350 mm long, and length is what a racing exhaust uses instead of a restrictor.

Key Features

• Racing full system for the BMW S1000RR, 2015 to 2018.
• Titanium collector, Force silencer 350 mm.
• 4,1 kg against 10,4 kg for the standard system.
• Can be combined with the matching dB killer.
• Racing part, not approved for road use.

Three Hundred and Fifty Millimetres

The Moto GP system saves 7,5 kg and measures 113 dB. This one saves 6,3 kg. The difference is a longer, quieter can.

Spark builds this range specifically around the noise limits that European circuits and championships impose, and it says so plainly: different silencers, different sound levels, each in compliance with a different rulebook. This is the middle of that spread.

Seventeen Euro Apart

2.131 for the Moto GP system, 2.148 for this one. Seventeen euro between two articles that differ by 1,2 kg and by a great deal of noise is not a price ladder — it is two answers to the same question, sold at the same money.

Spark does that deliberately across this range. The decision is meant to be made on the noise rule at the circuit you ride, not on what you can afford. Only the Konix Evo system GBM8811T carries a real premium, and that is because of the silencer on it rather than the collector.

The dB Killer Is a Separate Decision

All versions in Spark's S1000RR range can take the matching dB killer. That is worth knowing before choosing between the three systems: an insert lowers the figure further, at a cost in flow, and it is a bolt-in part rather than something built into the silencer.

A rider who attends one strict event a year and a dozen relaxed ones is better served by a system that is right without an insert and can take one when it has to.

Titanium Where the Length Is

The collector on a four-cylinder is four pipes and a merge — a long, heavy assembly hanging low and forward. Spark offers it in steel and in titanium; this system carries the titanium version, which is where the bulk of the six kilos comes from.

The silencer contributes less than most owners expect. It is the visible part, but it is not the heavy one.

Built With Race Teams

The S1000RR programme was developed with Superstock1000, CIV and British Superbike outfits, and taken to the Isle of Man. Endurance teams have used the same equipment in the world championship, which is a harder test of a weld than a dyno run is.

Fitment & Compatibility

BMW S1000RR, 2015 to 2018. Moto GP version: GBM8805T. Konix Evo Evo2018 version: GBM8811T. To keep the passenger footrest, add the frame bracket SKIT039. Bikes from 2009 to 2014 need the separate SKIT019 mounting kit.

Road Approval

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

Specifications

• Part number: GBM8803T
• Type: Full system, racing
• Design: Force
• Silencer length: 350 mm
• Material: titanium collector, titanium silencer
• Weight: 4,1 kg (standard system 10,4 kg)
• dB killer: available as a matching accessory
• Passenger footrest: retained with the optional SKIT039 bracket
• Road approval: none, racing part
• Fitment: BMW S1000RR (2015-2018)
• Manufacturer: Spark Exhaust Technology, Mantova, Italy