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GRK Multi-use rear knuckle (Red Black Purple) [Shibata] R31S334BK R31S334RD R31S334PU

Marsoni M251S
Sale price$119.99
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GRK Multi-use rear knuckle (Red Black Purple) [Shibata] R31S334BK R31S334RD R31S334PUThis is a new concept aluminum rear knuckle that can be used with both A arm and H arm specifications depending on the combination. By making the axle hub unit and the knuckle base body separate structures, it is now possible to change the tread width and fine tune the position of the axle axis by changing the spacer thickness. The extension plate that supports the A arm specification In addition to the height of the pillow ball mounting position, it
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.3 ★★★★★
Based on 441 reviews
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Verified Purchase
Scottytoohotty
Chelsea, US
★★★★★ 1
DO NOT BUY THIS GARBAGE
Size: 20-35 HP
DO NOT BUY. Stopped working after 2nd trip total of 2 hours use. Not returnable after 30 days. Could easily ruin your engine. Expensive garbage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
T
Verified Purchase
Thomas W.
Draper, US
★★★★★ 5
Looks very good quality to me.
Size: 85-300 HP
Everything looks good quality to me. I find it odd that the people leaving bad reviews with pictures of broken and melted impeller, when you can clearly see the brass on the inside is brown and dirty like old pennies and mine is shiny new. It's almost like the took the pictures of the ones they replaced to get a refund and a free repair kit.
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Reviewed in the United States on April 26, 2026
K
Verified Purchase
Kris W Cayton
New York, US
★★★★★ 5
Great quality and price
Perfect fit. Received quicker than boat shop
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Reviewed in the United States on June 22, 2025
R
Verified Purchase
Roger
Draper, US
★★★★★ 5
Easy to install if you watch some online how to videos.
The water pump kit worked great on my 35 year old, 2 stroke, 100hp, Mercury Outboard.
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Reviewed in the United States on May 15, 2025
M
Verified Purchase
Mike M.
Massapequa, US
★★★★★ 4
Very good shipped and received fast
Missing one bottom gasket. Maybe factor made changes from old style
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Reviewed in the United States on July 10, 2021

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