KTM 2025 125 SX FMF Exhaust Weight

VetStuff
Posts
23
Joined
1/25/2023
Location
Round Rock, TX US

Bought full kit to see if it might affect very occasional (2x but very noticeable when happened) and unexpected bog.

578g savings or 1.26lb between factory fatty pipe and Ti can.

Couldn’t find this anywhere beforehand, figure someone will want to google and know eventually.

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8/3/2025 10:36pm

A FMF shorty in your hand feels real close  in weight  to a PC carbon .  The FMF sits lower on the bike also . 

1
VetStuff
Posts
23
Joined
1/25/2023
Location
Round Rock, TX US
8/4/2025 5:41am

I couldn’t find a confirm that any version of a shorty would fit the new TBI models or def would have gone that route.

wrc777
Posts
3196
Joined
5/21/2020
Location
Greenwood, IN US
Fantasy
8/4/2025 2:18pm

I thought procircuit had a shorty for that bike. Check and see if you have oil leaking around the cc pressure sensor. I don’t think they seal great. That might cause it to run odd. 

1

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