Blade Boss - suits Masport & Jetfast/Supaswift

This high-quality Boss Disc (SKU: JM1608) is a durable replacement part designed to fit a range of popular mower decks. With a 7/8” (22mm) centre hole and a 5/32” (4mm) keyway, it provides a secure and precise fit for reliable cutting performance. Compatible with OEM references including Masport 580083, Jetfast 900236, and 90011, this disc is an ideal choice for maintaining your mower’s efficiency.

• Precision-engineered with a 7/8” (22mm) centre bore and 5/32” (4mm) keyway for accurate installation.
• Robust construction ensures long-lasting durability in tough Australian conditions.
• Direct replacement for multiple OEM part numbers, simplifying your parts sourcing.

• Masport mower decks (OEM 580083)
• Jetfast mower decks (OEM 900236, 90011)
• Compatible with other brands using Stens JM1200

Mower Deck Parts – replacement discs and pulleys for rotary mowers.