2018 KTM reed valve failure

DirtRoadmx47
Profile picture for user DirtRoadmx47
Posts
168
Joined
6/18/2012
Location
Campbell Hall, NY US
Fantasy
1646th
DirtRoadmx47
35 hours on a 2018 KTM 250SX had one of the inner reed valve snap off. Ran like it had a bad plug. Heads up to anyone owning one. Replaced it with V force system.
2
|
ktmdan
Profile picture for user ktmdan
Posts
1219
Joined
4/1/2008
Location
Houston, TX US
ktmdan 9/8/2021 4:41pm
9/8/2021 4:41pm
DirtRoadmx47 wrote:
35 hours on a 2018 KTM 250SX had one of the inner reed valve snap off. Ran like it had a bad plug. Heads up to...
35 hours on a 2018 KTM 250SX had one of the inner reed valve snap off. Ran like it had a bad plug. Heads up to anyone owning one. Replaced it with V force system.
Did it tear up the cylinder?
1
FI2T
Profile picture for user FI2T
Posts
685
Joined
10/23/2012
Location
Kennewick, WA US
FI2T 9/8/2021 4:51pm
9/8/2021 4:51pm
Hopefully it didn't tear anything up? The vforce 4 gives a solid gain in performance and improves the power delivery on these bikes as well. Definitely a worthwhile upgrade!
SEEMEFIRST
Profile picture for user SEEMEFIRST
Posts
10987
Joined
8/21/2006
Location
Arlington, TX US
SEEMEFIRST 9/8/2021 5:05pm
9/8/2021 5:05pm
They running steel reeds?
The first thing I ever did on a 2 stroke is ditch the steel reeds. They're going to fail, and fiber is cheap insurance.
cloud41
Profile picture for user cloud41
Posts
246
Joined
8/28/2020
Location
Chicago, IL US
cloud41 9/8/2021 5:09pm
9/8/2021 5:09pm
Happened to a buddy’s 2019 250sx. It ate the reed without any issues. He replaced it with a vforce, and it has been good since.

The Shop

See All »
PNWRider
Profile picture for user PNWRider
Posts
476
Joined
1/31/2021
Location
Stanwood, WA US
PNWRider 9/9/2021 4:59am
9/9/2021 4:59am
Reeds are a wear item. They need checking and periodic replacement.
5
jbonemalone
Profile picture for user jbonemalone
Posts
299
Joined
12/4/2016
Location
Otis, LA US
jbonemalone 9/9/2021 9:15am
9/9/2021 9:15am Edited Date/Time 9/9/2021 2:51pm
Mine broke and were eaten by the engine at 2 hrs.
New top end, new crank,
rad valve and boyesen reeds 140 hrs later no issues.
DirtRoadmx47
Profile picture for user DirtRoadmx47
Posts
168
Joined
6/18/2012
Location
Campbell Hall, NY US
Fantasy
1646th
DirtRoadmx47 9/9/2021 5:38pm
9/9/2021 5:38pm
Luckily no damage to the cylinder. Surprised someone only had 2 hours and they failed ???? What's causing this ?Fiber reeds
Pool-eh
Profile picture for user Pool-eh
Posts
157
Joined
12/5/2010
Location
Henderson, NV US
Fantasy
2875th
Pool-eh 9/9/2021 6:32pm
9/9/2021 6:32pm
If my memory serves,on a pulp pod with Tassinari, he said ktm stopped using the vforce on their bikes from the factory and they are now a Chinese made rip off of his design. May be some poor quality reeds out there

Post a reply to: 2018 KTM reed valve failure