Grasscool Raptor 52 inch Mower Blades Replace Hustler 603995 for SD Fastrack Super S Mini Z X-ONE 52'' Zero Turn Riding 795526 783753 (Circle Hole)

What It Is

This is a set of three aftermarket 52-inch mower blades designed to replace OEM Hustler part 603995. They are built for zero-turn mowers with 52-inch decks, including Hustler SD, Fastrack, Super S, Mini Z, and X-ONE models, as well as compatible Big Dog and Grasshopper units.

Fitment & Compatibility

Before buying, verify three things: deck size (must be exactly 52 inches), blade length (these are 18.25 inches), and mounting hole (circle hole, not oval). These replace Hustler OEM 603995, 795526, and 783753. They fit Hustler SD, Fastrack, Super S, Mini Z, X-ONE, and also work on some Big Dog (e.g., Alpha, Stance) and Grasshopper zero-turn models with 52-inch decks. Check your OEM part number—if yours is 603996 or has an oval hole, these won’t fit. Measure your current blade length and hole shape to confirm.

Key Things to Know

• Quality: Grasscool blades are heat-treated and laser-cut, but they’re not as thick as OEM Hustler blades. Expect slightly shorter lifespan in heavy or rocky conditions.
• Installation: Straightforward bolt-on swap—no modification needed if fitment matches. Use a torque wrench to 70–90 ft-lbs. The blades are pre-balanced, but it’s wise to check balance yourself.
• Common gotcha: The circle hole requires a specific bolt pattern. If your deck uses an oval hole (common on older Hustler models), these will not center properly and can vibrate badly.
• Performance: Good for standard residential and commercial cutting. Lift is adequate for grass up to 6 inches, but not ideal for thick, wet, or overgrown turf.

Should You Buy It

Buy these if you need a budget-friendly replacement for a Hustler 52-inch zero-turn with circle-hole blades and don’t mind slightly shorter blade life. They’re a solid value for residential or light commercial use. Skip them if you run a heavy commercial operation in tough conditions—OEM blades will last longer and cut cleaner in thick grass.