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

Name: 1" 6-Hole Prop Extension (Fixed-Pitch &amp; Ground-Adjustable Only)
SKU: EXT-6H
Availability: InStock

⚠️ Fixed-pitch and ground-adjustable props only. This 1″ 6-hole extension is not for constant-speed propellers. For constant speed, use our 12-hole extensions.

1″ long, 6-hole prop extension in 5″, 6″ or 7″ diameter, every bolt pattern. Not for constant-speed props. Bolts not included: you will need prop bolts 1″ longer than your current ones.

Diameter

Engine Bolt Pattern

Prop Type

Clear

Prop Bolt Pattern *

Engine and prop use different patterns? Pick your prop’s pattern here. Mixed patterns add $50. Rotax can only be paired with SAE #1.

⚠️ Important: 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. Rotax constant-speed setups: please call. Your engine and prop can use different patterns, so please check both. Mixed patterns add $50.

Engine (make & model) *

Propeller (brand & model) *

Prop hub mounting diameter *

I have checked that my engine flange and propeller both match the bolt pattern I selected, and that the extension diameter is the same as or larger than my prop hub.

Need a length, diameter or pattern not listed? Request a custom extension or call (817) 326-6293.

SKU: EXT-6H

Category: Prop Extensions

Description

⚠️ Fixed-pitch and ground-adjustable props only. This 1″ 6-hole extension is not for constant-speed propellers. For constant speed, use our 12-hole extensions.

Short 1″ prop extension in the 6-hole style, machined in-house from 6061-T6 aluminum. Available in 5″, 6″ and 7″ diameters for every standard bolt pattern.

Length: 1.000″
Style: 6-hole
Props: fixed-pitch or ground-adjustable only (no constant speed)
Diameter rule: the extension must be the same as or larger than your prop hub’s mounting diameter. Fixed-pitch props on SAE #2, #5 or #6 require the 7″ diameter.
Bolts not included: 6-hole extensions do not come with mounting bolts. You will need prop bolts 1″ longer than the ones you use now. Use the prop bolt calculator or order bolts here.

Questions? Call (817) 326-6293.

Additional information

Weight	N/A
Dimensions	N/A
Diameter	7", 6", 5"
Engine Bolt Pattern	SAE #1 (3/8" bolts, 4.375" circle), SAE #2 (3/8" bolts, 4.75" circle), SAE #5 (7/16" bolts, 4.75" circle), SAE #6 (1/2" bolts, 4.75" circle), Rotax 447/503/582 (8mm bolts, 75mm circle), Rotax 912 pre-1997 (8mm bolts, 100mm circle), Rotax 912/914/915/916 (8mm bolts, 4" circle)
Prop Type	Fixed Pitch, Ground Adjustable