Apico KTM SXF/EXC-F 450 13-24 Performance + Clutch Kit Excluding SpringsApico Performance+ clutch kits offer the complete solution as with our Factory Racing kits, with the added benefit of having aramid fibre papers on the friction plates. This enables them to work at higher temperatures and makes them more durable than standard giving an overall better performance. These products are specifically developed for motocross and enduro bikes.