Product Description
With unsurpassed quality and a commitment, Wossner will always listen to the customer as this assures you will always receive the high quality forged CNC machined components you would expect from today’s top European piston and rod manufacturer. Wossner believes in continued research and development so that the end user is guaranteed to always receive the most horsepower available from a forged piston.
All pistons come balanced, gas ported, and with a moly coating on the skirts at no additional charge. Kits included Pistons, Pins, Rings and Clips.
Yamaha YZF-R1 09-15
Std Bore: 78mm
| Piston Kit# | Disp. | Bore Size | Over Size | Comp Ratio | Gram Wt | Ring # | Pin # | Lock # |
| K8812DA-4 | 998cc | STD | STD | 13.5:1? | 780XAS | WP083 | CW17 |
Yamaha YZF-R1 07-08
Std Bore: 77mm
| Piston Kit# | Disp. | Bore Size | Over Size | Comp Ratio | Gram Wt | Ring # | Pin # | Lock # |
| K8753DA-4 | 998cc | STD | STD | 13.5:1 | 770XAS-2 | WP083 | CW17 |
Yamaha YZF-R1 04-06
Std Bore: 77mm
| Piston Kit# | Disp. | Bore Size | Over Size | Comp Ratio | Gram Wt | Ring # | Pin # | Lock # |
| K8752DA-4 | 998cc | STD | STD | 13.5:1 | 770XAS-2 | WP083 | CW17 | |
| K8752D100-4 | 1023cc | 78mm | 1mm | 13.5:1 | 780XAS-2 | WP083 | CW17 |
Yamaha YZF-R1 98-03
Std Bore: 74mm
| Piston Kit# | Disp. | Bore Size | Over Size | Comp Ratio | Gram Wt | Ring # | Pin # | Lock # |
| K8840DA-4 | 998cc | STD | STD | 12.5:1? | 740XDS | WP083 | CW17 | |
| K8840D100-4 | 1024cc | 75mm | 1mm | 12.5:1? | 750XDS | WP083 | CW17 | |
| K8840D200-4 | 1051cc | 76mm | 2mm | 12.5:1? | 760XDS | WP083 | CW17 |
