Outboard · propeller size
Yamaha XF450USA2 / LXF450USA2 (XTO) propeller size
The Yamaha XF450USA2 / LXF450USA2 (XTO) is a 450 hp outboard with a 1.79:1 gearcase. In one published sea trial it ran 6,100 rpm at full throttle on 16.375 in props of 21 in pitch. The right prop lands full throttle in the engine's range with your normal load.
Power450 hprated
Gearcase1.79:1ratio
Sea trials1published tests
Pitch run21 inin those tests
Free check
MotorYamaha XF450USA2 / LXF450USA2 (XTO)
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Free · no account · under two minutesSpecifications
XF450USA2 / LXF450USA2 at a glance.
- Maker
- Yamaha
- Model
- XF450USA2 / LXF450USA2 (XTO)
- Power
- 450 hp
- Gearcase ratio
- 1.79:1
- Full-throttle rpm in published tests
- 6,100 rpm
- Props in those tests
- 16.375 in diameter, 21 in pitch
- Prop lines in those tests
- Yamaha XTO Offshore
Sea trials
Boats with a Yamaha XF450USA2 / LXF450USA2 (XTO) and what they ran.
| Boat | Prop | WOT rpm | Speed | Conditions | Source |
|---|---|---|---|---|---|
| Sportsman Heritage 321 · 32.17 ft | 16.375 × 21 in XTO Offshore, stainless, 3-blade | 6,100 | 55.0 kn | 2 × 450 hp · 6,114 kg (13,480 lb) as tested | sportsmanboatsmfg.com |
Related
Other 450 hp outboards.
Cross-brand options appear as other makers' engines reach the data.
Questions
About the Yamaha XF450USA2 / LXF450USA2 (XTO).
What rpm did the Yamaha XF450USA2 / LXF450USA2 (XTO) reach at full throttle in published tests?
6,100 rpm across one published test, with top speeds of 55.0 kn. Each test is listed above with its source.
What prop size did boats with a Yamaha XF450USA2 / LXF450USA2 (XTO) run?
16.375 × 21 in on the Sportsman Heritage 321. The right size for your boat depends on its weight, hull and load; the free check works it out.
What is the Yamaha XF450USA2 / LXF450USA2 (XTO)'s gearcase ratio?
1.79:1, per Yamaha's published data.