Complete ignition kit from tuning expert Top Performances. The kit includes a racing ignition coil with silicone plugs, an alternator shim with offset and digital CDI / ignition unit. The system produces a much stronger and rev-resistent spark and achieves the optimal firing point, regardless of revs. The alternator shim offset means a fundamentally performance-oriented advance of the ignition timing. Overall, a great performance kit that is very easy to install and requires no further tuning.