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NK300/NT300 HD Rock Guard

Name: NK300/NT300 HD Rock Guard
Brand: Newport
SKU: 20A1100074
Price: 99.99 USD
Availability: InStock

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$99.99

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Features

Fits NK300 HD and NT300 motors (shared housing geometry)
Shields propeller from rocks, roots, and submerged debris
Integrated deflection fins prevent weed and vegetation fouling
Marine-grade construction: UV, saltwater, and impact resistant
Installs with included stainless mounting hardware

Details

The Rock Guard is the first purpose-built prop and motor pylon protection solution for Newport electric outboard motors. Engineered specifically for Newport NK300 HD and NT300, the Rock Guard protects your propeller by deflecting rocks, roots, ramps and debris before they reach the blades. We also designed in a wrap-around nose protector to shield the motor pylon against blunt impact. Built in armor, made for hydrodynamic performance, preserves clean water flow so thrust and speed are unaffected.

Built from marine-grade materials rated for UV exposure, saltwater, and hard impact, the Rock Guard is ready for the water where fish actually live. Installation is fast, with included stainless hardware; no modifications required. It fits because it was built for your motor.

what’s in the box?

(1) NK300/NT300 HD Rock Guard Nose Cap
(1) NK300/NT300 HD Rock Guard Skeg
Stainless Steel Mounting Hardware & Tool
(3) M4 x 30mm Self Tapping Screws
(3) M3 x 55mm Socket Cap Bolts(3) M3 Nuts(1) 2.5mm Allen Key
Quick-Start Installation guid

Owner's Manual

Download Owner's Manual

NK300/NT300 HD Rock Guard

$99.99

Armor Built for Impact.

Purpose-Built for Your Motor.

No universal compromise. Engineered specifically for NK180 HD, NK300 HD, and NT300 housings.

Raked 3-Fin Prop Protection.

Three angled fins shield the prop from rocks, stumps, and debris while shedding weeds before they wrap.

Full Pylon Protection.

Wrap-around nose takes head-on hits. Reinforced skeg guards the entire motor pylon — not just the blades.

Installs in Minutes.

Direct skeg replacement. Stainless hardware included. No drilling. No modification.

Compatibility: NK300 HD, NT300
Material: Nylon 6/6 composite, UV and saltwater resistant
Hardware: Stainless steel screws and washers
Installation: Allen key install, no modification required
Saltwater Safe: Yes
Dimensions: 11" L x 6.9" W x 8" H
Weight: 0.81 lbs
Prop Coverage: Partial wrap, open front for thrust efficiency
Performance Impact: No drag or speed reduction

Customer Reviews: NK300/NT300 HD Rock Guard

Rated 5.0 out of 5 stars based on 5 customer reviews.

100% of reviewers recommend this product.

Nice prop guard! Now, FIX YOUR SPEED CONTROLLER!!!

Rating: 5 out of 5 stars

Nice job on the guard! Fit is perfect and will provide excellent prop protection! Now, my issue with your NK300. Your speed controller is REALLY TWITCHY! Could / should be MUCH smoother!! I am a professional pilot and I notice stuff like this! PLEASE tell me you guys are aware of this and are working to correct the problem! Perhaps an all new controller?? Otherwise, I'm very happy with my purchase

Performance: 5 out of 5 (1 = Poor, 3 = Average, 5 = Excellent)
Environment: Freshwater

Reviewed by Michael B. on November 12, 2026

Verified buyer

Recommends this product

Prop Protector - delivers as promised

Rating: 5 out of 5 stars

I’m glad this finally came. After the hurricane Isaias the NW Florida panhandle was a mess on land and in the water. Lots of fallen trees and submerged trees in the waters here. I think I personally ran over 2 of those hidden monsters that would have taken out my prop for sure. As much as you look, there is always that one that you run over by mistake. This prop guardian did its job and not a scratch or even a delay in motion. On a side note, the fins on the prop protector seem to act like skaggs on a surfboard and give you a quicker turning ability.
Thanks again, Steve

Performance: 5 out of 5 (1 = Poor, 3 = Average, 5 = Excellent)
Environment: Both

Reviewed by Steve R. on November 1, 2026

Verified buyer

Recommends this product

Best peace of mind

Rating: 5 out of 5 stars

I fish the Susquehanna river in PA, mile wide and foot deep prop eater. After watching my buddy break his prop, I ordered a replacement and rock guard. Peace of mind, still mindful of rocks, but how it protects the front housing and prop, if the kayak floats the motor can move it. That hidden rock one doesn't see til it's to late, the rock guard is worth every penny.

Performance: 4 out of 5 (1 = Poor, 3 = Average, 5 = Excellent)
Environment: Freshwater

Reviewed by Jesse D. on October 8, 2026

Verified buyer

Recommends this product

Prop Saver!!

Rating: 5 out of 5 stars

This is a great accesory. Will save my props and sheer pins in the future

Performance: 5 out of 5 (1 = Poor, 3 = Average, 5 = Excellent)
Environment: Saltwater

Reviewed by John M. on October 6, 2026

Verified buyer

Recommends this product

Prop Protector

Rating: 5 out of 5 stars

Great product to protect the prop when navigating shallow water with rocks or other hard structures! Easy to install and very sturdy.

Performance: 5 out of 5 (1 = Poor, 3 = Average, 5 = Excellent)
Environment: Freshwater

Reviewed by Edwin W. on September 22, 2026

Verified buyer

Recommends this product

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NK300/NT300 HD Rock Guard

NK300/NT300 HD Rock Guard

Armor Built for Impact.

Purpose-Built for Your Motor.

Raked 3-Fin Prop Protection.

Full Pylon Protection.

Installs in Minutes.

Tech Specs

Frequently Asked Questions