What's the hardest bike to work on you ever had?

Beta480RX
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53
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12/30/2025
Location
Helena, MT US
3/14/2026 7:44am

Second for Gold Wings. Doing carb work on those bastards is a nightmare. Then add all the farkles those clowns would put on and it was even harder. EFI and the single sided rear swingarm were a blessing Honda engineers bestowed on us lowly techs that had to work on them. Not going to discuss the breaking aluminum frames and subsequent recalls of said 1600 Wings.

Unlike others on here, I loved the gear driven cams on the RF4 KTM engines. Stupid easy to do shims. Never once had to use the cam bridge to retime anything. Lock the crank in place with the plug bolt and you could do all the top end work easy peasy. Wish my Betas kept that part of the RF4 top end.

Having to break the timing chain on the RFS engines sucked. KTM couldn't make the chain one link longer and adjust the sliders accordingly to make service a tad easier? Also as mentioned above, the first linkage KTMs where you had to loosen everything to get the exhaust off was sheer stupidity.

Struggled an awful lot on the first CRF450Rs as well. Not a lot of room in-between the spars to get to anything. The smaller cylinder/head of the 250s made it a bit easier.

5
Banana_oil
Posts
521
Joined
10/20/2011
Location
Gothenburg SE
3/14/2026 8:09am

Crf250x 2011, removing the subframe to do a carb rebuild took hours before I learned the tricks

1
AssangeMX
Posts
463
Joined
3/12/2024
Location
Belmarsh, CA US
3/14/2026 8:47am Edited Date/Time 3/14/2026 8:48am

24 yzf250. The air filter is a dirt scoop for the engine.  750ml is way too little imo. Plus, the single Allen on one side panel.

The oil drain is a pain with a skid plate, plus, you cant get a ratchet wrench over ghe 12mm bolt head easily.

1
2

The Shop

Kenny Banyan
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2928
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6/2/2024
Location
Seattle, WA US
3/14/2026 9:34am
This KTM Projekt from 1988 cost me 1,5 years , Pain and Money to Finish, was a Challenge to work on . 

This KTM Projekt from 1988 cost me 1,5 years , Pain and Money to Finish, was a Challenge to work on . 

IMG 4220 1.jpeg?VersionId= NtY5 dNIMG 0155 6

That’s really nice man…. Good job!🔥

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1
Kenny Banyan
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Location
Seattle, WA US
3/14/2026 9:45am

I used to work at a Honda dealership working in the used bike department. When trade-ins came in My job was to detail the bike and take the bike out for a ride and see if it had any problems , if it did write it up and have the service department fix it. One of these came in , same  color as this bike (this was 79) . I took it out for a ride I couldn’t help my self and decided to do a burn out. It put down a black strip about a 150’. Love these bikes.

2
1
Sidewinder 1
Posts
101
Joined
7/23/2023
Location
Bossier City, LA US
3/14/2026 10:01am
This KTM Projekt from 1988 cost me 1,5 years , Pain and Money to Finish, was a Challenge to work on . 

This KTM Projekt from 1988 cost me 1,5 years , Pain and Money to Finish, was a Challenge to work on . 

IMG 4220 1.jpeg?VersionId= NtY5 dNIMG 0155 6

But it looks great and you did a fantastic job! 

2
Sidewinder 1
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101
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7/23/2023
Location
Bossier City, LA US
3/14/2026 10:05am
Jkawi wrote:

Any motorcycle with multiple carburetors.

Bingo

Sidewinder 1
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101
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Location
Bossier City, LA US
3/14/2026 10:07am
Timo wrote:

Xj700x and cbr600f2 are a pain in the ass to work on. Dirt bikes are super easy compared to street bikes.

This is the most factual statement in this post.

1
RySut198
Posts
1
Joined
3/13/2026
Location
Watsonville, CA US
3/14/2026 10:08am

A girlfriend had a Sherco 300 that was an absolute nightmare 

Sidewinder 1
Posts
101
Joined
7/23/2023
Location
Bossier City, LA US
3/14/2026 10:12am
Meister wrote:

Anything with a chain in the engine. 

I was just thinking to myself, I am so glad I only ride 2 strokes.

2
Tiki
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10568
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8/1/2006
Location
Corona, CA US
Fantasy
3/14/2026 10:24am

First gen 4 strokes.  Valves were a nightmare. 

Tiki wrote:

Easiest thing ever. Line the dots up. You're done. 

I guess I didn’t mean the process, but more the frequency and people grenading them 

Fair enough. 

On that note, Your Two Strokes should receive the same love, it was that people didn't. 

Tiki
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Location
Corona, CA US
Fantasy
3/14/2026 10:27am

The payment was hearing that exhaust. Its one of the greatest things in the world. 

12
avidchimp
Posts
5690
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7/9/2008
Location
E.G.L., MN US
3/14/2026 10:47am
zippytech wrote:

My 2000 cr250 seems harder then my 98 cr250

Neverclear wrote:

I have 2 of the '00 CR250's. The struggle to get the intake boot around the carb is real...

Correct, and I'll add my 2023 DRZ 400 to that list. Even worse than the '00 CR 250.

4
3/14/2026 11:07am

Any multi cylinder street bike after working on street bikes. Working on my dirt bikes is a much much easier. Go work on street bikes for awhile. You'll never complain about your dirt bike again. 

9
3/14/2026 11:14am

Try changing the spark plugs on an Africa Twin and you'll never complain about a proper dirt bike ever again.

5
Kenny Banyan
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2928
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Location
Seattle, WA US
3/14/2026 11:46am
ksithumper wrote:

Try changing the spark plugs on an Africa Twin and you'll never complain about a proper dirt bike ever again.

No kidding… can you explain what the issues are.

OldTech
Posts
1194
Joined
1/13/2024
Location
Decatur , AL US
3/14/2026 7:09pm
Beta480RX wrote:
Second for Gold Wings. Doing carb work on those bastards is a nightmare. Then add all the farkles those clowns would put on and it was...

Second for Gold Wings. Doing carb work on those bastards is a nightmare. Then add all the farkles those clowns would put on and it was even harder. EFI and the single sided rear swingarm were a blessing Honda engineers bestowed on us lowly techs that had to work on them. Not going to discuss the breaking aluminum frames and subsequent recalls of said 1600 Wings.

Unlike others on here, I loved the gear driven cams on the RF4 KTM engines. Stupid easy to do shims. Never once had to use the cam bridge to retime anything. Lock the crank in place with the plug bolt and you could do all the top end work easy peasy. Wish my Betas kept that part of the RF4 top end.

Having to break the timing chain on the RFS engines sucked. KTM couldn't make the chain one link longer and adjust the sliders accordingly to make service a tad easier? Also as mentioned above, the first linkage KTMs where you had to loosen everything to get the exhaust off was sheer stupidity.

Struggled an awful lot on the first CRF450Rs as well. Not a lot of room in-between the spars to get to anything. The smaller cylinder/head of the 250s made it a bit easier.

I wish I only had to adjust the valves on the RF4 engine and don't love it because I had to make the cam bridge and a jig to press the gears and re time the cams. Monday I'm going back to making good money on Gold Wings!

3/14/2026 8:15pm

Since street bikes have entered the chat, while basically anything with a fairing is a total bitch with Goldwings and the other big tourers basically being the end-level bosses of total nightmares to work on, the later model naked UJM might be the sneaky one you don't figure on being a big deal. Until you have to figure out how the hell the engineers hid all the crap that makes a bike run in there- somehow. Some sort of the blackest engineering voodoo witchcraft goes into the making of those things. 

5
crusher773
Posts
2006
Joined
12/23/2009
Location
Coweta, OK US
3/14/2026 10:01pm
Spoonguy wrote:

My Harley, no contest.

I endorse this statement they are so frickin stupid.  

1
1
3/14/2026 10:16pm

If we bring it back to dirt I would say some of the bikes from the 70s and 80s. When you needed like two different size wrenches. To take something off. 

Or suzuki's from then with thier Phillips head engine case bolts. That were actually jis so they would get stripped easily. Because more then once someone tried to remove them without an impact driver. 

2
deanwhite51
Posts
2662
Joined
10/5/2017
Location
Sydney AU
3/15/2026 7:36am

Them late 90’s KTMs kept me awake at night. 

1
MX707#
Posts
124
Joined
2/2/2022
Location
Charlton City, MA US
3/15/2026 9:04am
H4L wrote:
I’m in the minority. Owned a 09,10 & still own a 12 CRF450r model. Some of the most durable reliable bikes owned. Preferred them over the 05,06...

I’m in the minority. Owned a 09,10 & still own a 12 CRF450r model. Some of the most durable reliable bikes owned. 
Preferred them over the 05,06 & 08 previous models owned.  
Getting the suspension dialed for you & a Yosh exhaust with a vortex ecu transforms the 09-12 models.  Still one of my favorite gen bikes.  

Your not alone alone bud. I know these Gen crf get alot of flak but I've had multiple and haven't had any issues other then a bad fuel pump in an 09. Are they the easiest to work on ? No but waaay easier then a 10-13 yz450 my friend's had or my 12-15 ktms. Just bought a 11 crf450 all original with 30 hours on it for $2600 just to have a 450 to scratch that 4 stroke itch when I want something more then a 250 two stroke. Has a yosh slip on, bought a pc link and getting my ecu mapped by Tokyo mods. 1000003141.jpg?VersionId=XeMdEu8spFX6It.oV 8VQQy

9
FreshTopEnd
Posts
12982
Joined
8/16/2006
Location
Sacramento, CA US
3/15/2026 9:07am

73 Maico

1
1
ohiomotoxer
Posts
631
Joined
2/12/2017
Location
Cleveland, OH US
3/15/2026 9:12am

Replace the stator on older goldwing. Flat rare to boot

3
3/15/2026 2:16pm

Never had a road bike or a 4 stroke mx bike or many modern mx bikes so it is a twinshock Kramer for me.

 

davis224
Posts
7340
Joined
8/15/2006
Location
Cornland, IL US
Fantasy
3/15/2026 4:14pm
Beta480RX wrote:
Second for Gold Wings. Doing carb work on those bastards is a nightmare. Then add all the farkles those clowns would put on and it was...

Second for Gold Wings. Doing carb work on those bastards is a nightmare. Then add all the farkles those clowns would put on and it was even harder. EFI and the single sided rear swingarm were a blessing Honda engineers bestowed on us lowly techs that had to work on them. Not going to discuss the breaking aluminum frames and subsequent recalls of said 1600 Wings.

Unlike others on here, I loved the gear driven cams on the RF4 KTM engines. Stupid easy to do shims. Never once had to use the cam bridge to retime anything. Lock the crank in place with the plug bolt and you could do all the top end work easy peasy. Wish my Betas kept that part of the RF4 top end.

Having to break the timing chain on the RFS engines sucked. KTM couldn't make the chain one link longer and adjust the sliders accordingly to make service a tad easier? Also as mentioned above, the first linkage KTMs where you had to loosen everything to get the exhaust off was sheer stupidity.

Struggled an awful lot on the first CRF450Rs as well. Not a lot of room in-between the spars to get to anything. The smaller cylinder/head of the 250s made it a bit easier.

I hated GL1500s. The 1800 was a godsend.

davis224
Posts
7340
Joined
8/15/2006
Location
Cornland, IL US
Fantasy
3/15/2026 4:22pm

And I can't remember for the life of me the model, but it was an older Kawi street bike in the "v-max" vein of design, you had to drop the motor to take the stator cover off. Frame rail was directly in front of it/a bolt.

1
OldTech
Posts
1194
Joined
1/13/2024
Location
Decatur , AL US
3/15/2026 4:41pm
davis224 wrote:
And I can't remember for the life of me the model, but it was an older Kawi street bike in the "v-max" vein of design, you...

And I can't remember for the life of me the model, but it was an older Kawi street bike in the "v-max" vein of design, you had to drop the motor to take the stator cover off. Frame rail was directly in front of it/a bolt.

I believe you're referring to the Vulcan 750?

2
davis224
Posts
7340
Joined
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Location
Cornland, IL US
Fantasy
3/15/2026 6:19pm Edited Date/Time 3/15/2026 6:21pm
davis224 wrote:
And I can't remember for the life of me the model, but it was an older Kawi street bike in the "v-max" vein of design, you...

And I can't remember for the life of me the model, but it was an older Kawi street bike in the "v-max" vein of design, you had to drop the motor to take the stator cover off. Frame rail was directly in front of it/a bolt.

OldTech wrote:

I believe you're referring to the Vulcan 750?

Maybe? It's been probably 15 years so my memory may be a bit fuzzy, I wanted to say KZ750 but it doesn't look like the frame would be in the way. 

Edit: just googled a mid 80s Vulcan and that's it. I had the more modern Vulcans on my mind.

2

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