New Bosch CX generation 5 - seal/bush problem

B

Boogz83

Member
Joined
Feb 19, 2025
Messages
59
Reaction score
22
Location
Uk
Hi Anyone had issues with the seal/ bush falling out of the new gen 5 CX motor?

They are fixed in with the new two bolt system and no body even seems to know the correct torque for T40 bolts.

IMG_9488.png
 
⚡ EMTB Pro Go Pro — exclusive discounts & ad-free Peaty's 25% off & more · Ad-free browsing · Pro badge See the deals →
Boogz83 said:
Hi Anyone had issues with the seal/ bush falling out of the new gen 5 CX motor?

They are fixed in with the new two bolt system and no body even seems to know the correct torque for T40 bolts.
Click to expand...
I don't have that problem, but it seems to me that the axle squeaks when pedaling, on cx5. I have to change the pedal to try. but it seems to me that it is the engine
 
ficorama said:
I don't have that problem, but it seems to me that the axle squeaks when pedaling, on cx5. I have to change the pedal to try. but it seems to me that it is the engine
Click to expand...
Got to be honest the new generation 5 CX motor seems absolutely silent on my bike especially compared to my previous bike with a SX motor.
I suspect there must be an issue with yours?
 
maybe it's the pedal, I have to try it. although my frame creaked from day one. Orbea forgot to put all the parts at the seatstay and chain stay junction at the UDH hanger.
Boogz83 said:
Got to be honest the new generation 5 CX motor seems absolutely silent on my bike especially compared to my previous bike with a SX motor.
I suspect there must be an issue with yours?
Click to expand...
 
ficorama said:
maybe it's the pedal, I have to try it. although my frame creaked from day one. Orbea forgot to put all the parts at the seatstay and chain stay junction at the UDH hanger.
Click to expand...
Mines a cube and I have to say the build quality seems awful on a lot of the new emtb ranges!
I still can’t see how a seal can just drop out after 100 miles on a brand new bike
 
Boogz83 said:
Mines a cube and I have to say the build quality seems awful on a lot of the new emtb ranges!
I still can’t see how a seal can just drop out after 100 miles on a brand new bike
Click to expand...
definitely the quality of the product is bad. so far I'm disappointed in the big manufacturers. Turbo levo problem from the first day, I sold it. Orbea Wild 2025 problem from the first day, the gen 5 engine is not as smart, it feels weaker. I'm still thinking about what to do with Orbea.
 
ficorama said:
definitely the quality of the product is bad. so far I'm disappointed in the big manufacturers. Turbo levo problem from the first day, I sold it. Orbea Wild 2025 problem from the first day, the gen 5 engine is not as smart, it feels weaker. I'm still thinking about what to do with Orbea.
Click to expand...
I have no experience with Orbea I am afraid but definitely don’t swap it for a cube if you want better quality or customer service 😂
 
They changed the design of that bushing, you have an early one. Call your dealer and get the new bushing and problem solved.
 
ckkone said:
They changed the design of that bushing, you have an early one. Call your dealer and get the new bushing and problem solved.
Click to expand...
Ok cool thanks will message them is it just a dust seal and is it necessary to take the bolt out to replace?
 
Shark58 said:
Check my answer to same issue in the Vala thread: Santa Cruz Vala
Click to expand...
Thanks that’s exactly my issues! I wonder if they were never pushed in fully from the factory? I’ve just refitted my old one for now but will try and get some new ones asap.
Funny though I finished my ride without the bush and it was silent with no issues at all for 20 miles. Makes me wonder if it is more of a dust seal than a structural mount?

What did you torque the bolts up to?
 
Boogz83 said:
I have no experience with Orbea I am afraid but definitely don’t swap it for a cube if you want better quality or customer service 😂
Click to expand...
I’ve had four cubes from the Bosch CX Gen 1. Had Gen 2 and 4 and now got a new Gen 5 One44 all Cubes. Still got a seven year old Cube with Gen 2 CX and it’s been no trouble at all. Most of the components are not Cube anyway apart from the frame, it’s got Bosch motor, XT Drivetrain, Fox suspension etc..etc. What’s bad quality?
 
Old Codger said:
I’ve had four cubes from the Bosch CX Gen 1. Had Gen 2 and 4 and now got a new Gen 5 One44 all Cubes. Still got a seven year old Cube with Gen 2 CX and it’s been no trouble at all. Most of the components are not Cube anyway apart from the frame, it’s got Bosch motor, XT Drivetrain, Fox suspension etc..etc. What’s bad quality?
Click to expand...
They are crap quality just read the cube Facebook groups!

I bought a light weight hybrid one last year the headset failed, dropper failed, wheel hub was faulty, charging cover fell off and then the paint peeled off around shock mount! Cube customer care Uk were that bad I returned the bike and exchanged for a different model with the online store.

I love the new bike but already at 3 weeks old the sram shifter was draining and the battery going flat overnight and now the motor mount has fallen out 🤦

I get emtb are more complicated but never has this much grief in 35 years of riding! I’ve only managed about 400 miles on both bikes combined.

I get a lot of that is component related but still not great! On top of that whilst replacing the dropper I found 2 random torx screw rattling around loose in the frame!
 
Boogz83 said:
They are crap quality just read the cube Facebook groups!

I bought a light weight hybrid one last year the headset failed, dropper failed, wheel hub was faulty, charging cover fell off and then the paint peeled off around shock mount! Cube customer care Uk were that bad I returned the bike and exchanged for a different model with the online store.

I love the new bike but already at 3 weeks old the sram shifter was draining and the battery going flat overnight and now the motor mount has fallen out 🤦

I get emtb are more complicated but never has this much grief in 35 years of riding! I’ve only managed about 400 miles on both bikes combined.

I get a lot of that is component related but still not great! On top of that whilst replacing the dropper I found 2 random torx screw rattling around loose in the frame!
Click to expand...
Well with all of those problems I’m surprised you went for another Cube. All I can say is that my four Cubes have been perfect. My partner still has a Cube with a Bosch Gen 1 motor and since I replaced the cheap Suntour forks after 7 years with some Rockshocks she refuses to upgrade.
As I have said, you can’t blame Cube for generic pert faults. I just bought a spare mech hanger and even that was a non Cube part. I wouldn’t be surprised if a lot of different frame brands were made in the same factory.
 
Boogz83 said:
Hi Anyone had issues with the seal/ bush falling out of the new gen 5 CX motor?

They are fixed in with the new two bolt system and no body even seems to know the correct torque for T40 bolts.

View attachment 155446
Click to expand...
That is a well known prob of the early SX and CX Gen 5 and there is a fix that I forgot - pls google.
 

- YouTube

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
youtube.com youtube.com


hi everyone. please comment, it seems a bit too loud to me, maybe I'm wrong! the engine has about 180 km. bosch "gen5"
 
ficorama said:

- YouTube

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
youtube.com youtube.com


hi everyone. please comment, it seems a bit too loud to me, maybe I'm wrong! the engine has about 180 km. bosch "gen5"
Click to expand...
That does not sound right,back to a bosch dealer for a second onion!
 
Boogz83 said:
I have no experience with Orbea I am afraid but definitely don’t swap it for a cube if you want better quality or customer service 😂
Click to expand...
I've never had problems with Cube within the last 5 years
I feel bad news speads faster than good and that applies to anything one buys
I've taken note on issues on this forum
Also upgraded parts that people are recommending
I'm lucky I suppose to be able to maintain my bike which is a big plus
 
ficorama said:

- YouTube

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.
youtube.com youtube.com


hi everyone. please comment, it seems a bit too loud to me, maybe I'm wrong! the engine has about 180 km. bosch "gen5"
Click to expand...
dont know a bout gen5 but it is a lot louder than either of my Gen 4s and one has done over 1300 hard miles mostly in foul weather!
 
ficorama said:
I don't have that problem, but it seems to me that the axle squeaks when pedaling, on cx5. I have to change the pedal to try. but it seems to me that it is the engine
Click to expand...
Torque settings on a carbon frame are 9- 11nm
 
The bolts on the new generation 5 are a completely different design to the gen 4 etc.
The torque is 30nm
 
You must log in or register to reply here.
Keep reading
    Browse all

    Similar Threads

    Community Stats

    Since 2018
    669K
    Messages
    40,882
    Members
    Join 30,000+ Riders, it's free!
    Back
    Top