PISTON KIT ALL 1100RS 99 SET-2, WOSSNER K8543DA-2 BMW ROAD

This Wossner forged piston kit with a 99mm bore (actual 98.96mm) is designed for BMW 1100 and 1150 series motorcycles, including RS, GS, and S models across all production years. Engineered for durability and precise combustion performance, the kit includes two pistons and meets OEM compression specifications.

Features

• Forged construction for enhanced strength and heat transfer

• Elliptical design distributes loads evenly under thermal expansion

• Manufactured in Germany for high performance and reliability

Specifications

• Bore Size: 99mm (actual 98.96mm)

• Stroke: 70.50 mm

• Clearance: 0.04 mm

• Display Displacement: 1085 cm³

• Wossner Compression Ratio: OEM

• OEM Compression Ratio: 10.70:1

• Dome Volume: +2.30 cm³

• Compression Height: 32.10 mm

• Lock Part Number: C22X1.6

• Pin Part Number: WP009

• Ring Set Part Number: 990XSY

Vehicle Fitments

• BMW 1100RS (All years)

• BMW 1100GS (All years)

• BMW 1100S (All years)

• BMW 1150RS (All years)

• BMW 1150S (All years)