Ogura GT2.5-RM01 Electric PTO Clutch

What It Is

The Ogura GT2.5-RM01 is an electric PTO (power take-off) clutch that engages and disengages the mower blades on zero-turn and riding lawn mowers. It’s designed for heavy-duty commercial or residential mowers requiring a reliable, high-torque clutch.

Fitment & Compatibility

Before buying, verify these three things:

• Model/Brand Fit: This clutch fits many Exmark, Toro, Scag, and Hustler zero-turn mowers, but it’s not universal. Check your mower’s model number against Ogura’s OEM cross-reference (e.g., replaces Exmark 1-633174, Toro 117-5271).
• Measurements: The GT2.5-RM01 has a 1-inch shaft diameter, 3.5-inch bolt pattern, and 4.25-inch overall diameter. Measure your existing clutch’s shaft size, bolt hole spacing, and overall diameter to confirm.
• Electrical Specs: It runs on 12V DC with a 2.5A draw. Ensure your mower’s wiring harness and battery can support this—most standard mowers can, but older models may need a relay upgrade.

Key Things to Know

• Quality: Ogura is a top-tier OEM supplier; this clutch is built for longevity with sealed bearings and a robust electromagnetic coil. Expect 1,000+ hours under normal use.
• Installation Difficulty: Moderate to hard. You’ll need a puller tool to remove the old clutch, a torque wrench (tighten to 35–45 ft-lbs), and basic wiring skills. Budget 1–2 hours.
• Common Gotchas: The air gap (0.010–0.020 inches) must be set correctly after install—too tight or loose causes slippage or noise. Also, the clutch may come with a different wiring connector than your mower; you might need a pigtail adapter.
• No Warranty Mention: Check seller’s return policy—this is a pricey part, so ensure you can return if fitment fails.

Should You Buy It

Buy this if you need a direct replacement for a failed Ogura or OEM clutch on a commercial zero-turn mower and want proven durability. It’s overkill for small residential decks under 42 inches—skip it if your mower uses a manual PTO or a cheaper aftermarket clutch. Worth the $300 for heavy-use machines.