This kit comprises one stainless steel booster insert, and one spark plug, so two kits are required per bike.

An innovation from Scriminger Engine Developments. At Motorworks we avoid gimmicks, but the pulse jet ignition modification really does the job. The spark occurs inside a small chamber screwed into the normal spark plug hole in the head. When the gases in the chamber are ignited by the spark plug the burning gases then exit at high speed through several holes in the chamber making ignition of the main body of gas much quicker and more thorough.

• 10 to 20 percent more power
• Better economy
• Smoother running engine

Tried and tested on dynamometers and on the road the booster kit is well proven. We have tested it ourselves with good results.
The overall dimensions of the insert and smaller plug are the same as the conventional plug so there are no compatibility issues.
Widely used in classic racing.
Because of the rapid burn it is usually necessary to retard your ignition by 2 or 3 degrees to optimise running.
Spark plug included and also available separately to insert.
NOTE Price is per cylinder so order two for one twin cylinder bike. On twin spark models of the 8v R1100s and R1150s only the centre plug is replaced so again just two kits per bike.
For replacement spark plugs to fit the insert see SIA52109