2020 Rocket 3R final drive leak

RoyalSnake

.020 Over

Joined

Jul 12, 2021

Messages

11

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Rocket3r

• Mar 15, 2026

• #11

any update on this issue? mine is doing the same after service

 

Journeyman

"And this one is just right" ~ Goldilocks

Joined

Aug 13, 2017

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3,070

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Old Fort, NC 28762 USA

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2020 3R

• Mar 16, 2026

• #12

As @AzRocketman said.... Remove the ***fill*** plug with bike level and see how much runs out. Easier, faster (seconds), and more reliable than hoping the dealer admits they overfilled.

 

rick danger

Turbocharged

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Jun 18, 2025

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681

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Durham Ct.

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'20 KTM 1290 SAS '22 KTM 1290 SAR '24 rocket 3 GT

• Mar 17, 2026

• #13

Might happen from replacing the level plug before the oil gets a chance to settle and stop running out?

 

TURBO200R4

stand up straight and grab the world by the a$$

Joined

Jan 24, 2013

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10,670

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TUCSON AZ

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07 rocket III classic

• Mar 17, 2026

• #14

just a thought
they may lay it on its side and put a bunch of lube in it so as to overfill it
as journeyman said take the fill plug out and let it seek the correct level

 

RoyalSnake

.020 Over

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Jul 12, 2021

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Rocket3r

• Mar 18, 2026

• #15

About 50 - 70ml spilled from fill plug, hopefully this should fix the issue. Does anyone know how much oil does it take?

 

Journeyman

"And this one is just right" ~ Goldilocks

Joined

Aug 13, 2017

Messages

3,070

Location

Old Fort, NC 28762 USA

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2020 3R

• Mar 18, 2026

• #16

RoyalSnake said:

About 50 - 70ml spilled from fill plug, hopefully this should fix the issue. Does anyone know how much oil does it take?

Click to expand...

Doesn't sound like much, but that with what already leaked out- could be it

 

mo8414

Supercharged

Joined

Jul 26, 2025

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376

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2025 Triumph Rocket 3 Storm GT

• Mar 19, 2026

• #17

RoyalSnake said:

About 50 - 70ml spilled from fill plug, hopefully this should fix the issue. Does anyone know how much oil does it take?

Click to expand...

170 ML. According to the service manual. The procedure for changing the oil says to just fill it to the bottom of the top hole.

 

Mike188

Living Legend

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Dec 6, 2012

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3,717

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Jamestown; South Australia

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Matt Black 2012 R3R

• Mar 20, 2026

• #18

Welcome to the forums, from South Australia.

 

RoyalSnake

.020 Over

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Jul 12, 2021

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11

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Rocket3r

• Mar 20, 2026

• #19

No more leak after 150 km ride

 

Last edited: Mar 21, 2026

Redlog

Retired on a Rocket

Joined

Oct 19, 2019

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3

Location

Ayr Sotland

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R3 GT 2024

• Mar 21, 2026

• #20

Gilly said:

HI , My rocket 3 GT is doing the same , what was the outcome at the dealer ???

Click to expand...

My Rocket 3gt did this after 600mls service, Dealer had overfilled with new oil. Drain and refill sorted problem.