Precision-machined propeller extensions that move your prop forward for cowl clearance and correct fit. Machined in-house and 100% American-made in Texas, USA.

Options

Lengths: 1.25″ to 2.75″ in 1/4″ steps, then 3″, 4″, 6″ and 8″ (Rotax up to 4″)
Diameters: 5″ (Rotax), 6″ (SAE #1), 6″ and 7″ (SAE #2, #5, #6)
Bolt Patterns: SAE #1, #2, #5, #6, Rotax, and Continental O-200D (engine side only) (which one do I have?)
Prop Types: fixed pitch, ground adjustable, Whirlwind ground adjustable, or constant speed (constant speed adds $100; not available online for Rotax, please call). Have a Whirlwind ground-adjustable prop? Pick “Whirlwind Ground Adjustable”: Whirlwind props need a different drive-lug setup than other ground-adjustable props.

Free mounting bolts included (SAE patterns)

Every SAE extension comes with a free set of 12H extension-to-engine mounting bolts, sized to your bolt pattern (3/8″, 7/16″ or 1/2″): drilled-head bolts for spool extensions (3″ and longer), non-drilled for solid extensions. Rotax extensions do not include bolts. O-200D extensions include free 3/8″ engine bolts with nuts; 3″ and longer (spool) extensions include the full radius block kit: 6 bolts, 6 radius blocks, 12 washers and 6 locknuts.

Continental O-200D: engine side only (4″ bolt circle, 3/8″ bolts with nuts on the back). Pairs with an SAE #1 prop at no extra charge; SAE #2, #5 or #6 props add the $50 mixed-pattern charge. Available in 6″ or 7″ diameter, 1.5″ and longer only (the O-200D’s 1″ center boss needs the room), for fixed-pitch or ground-adjustable props. No constant-speed.

Extension length	Mounting bolt length
1.25″	2″
1.5″	2.25″
1.75″	2.5″
2″	2.75″
2.25″	3″
2.5″	3.25″
2.75″	3.5″
3″ and longer (spool)	2″

Works with your original prop bolts: all Saber extensions are built to work with your stock / OEM prop bolts on the prop side. No new prop bolts needed.

⚠️ Diameter matters: the extension and crush plate diameter must be the same as or larger than your propeller hub’s mounting diameter. A smaller diameter can cut into the prop hub, causing loss of bolt torque and catastrophic failure. Fixed-pitch props on SAE #2, #5 or #6 require the 7″ diameter. Ground-adjustable and constant-speed props normally use the 6″ diameter.

Engine and prop can differ: your engine flange and your propeller may use different bolt patterns. Any SAE pattern can be paired with any other; Rotax can only be paired with SAE #1. Mixed patterns add $50. Check both before ordering. We ask for your engine and prop with every order so we can set the extension up correctly.

Need something not listed? Shorter, longer, other diameters or patterns: request a custom extension or call (817) 326-6293.

Order policy: extensions are machined to order for your engine and prop combination.

Prop Extensions

1″ 6-Hole Prop Extension (Fixed-Pitch & Ground-Adjustable Only)

Propeller Extension