DD - Dirtbike Durability

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12/14/2020 5:33 AM

In the long run, are the newer dirbikes (2016+) will/can be as durable as older bikes (~ 2000)? Or light weight means less material which equals less durability ? More profit, cheaper materials?

My '99 KX 125 seems to be more durable than my 2016 KX250F and I am not talking about engine reliability or general maintanance. Radiators, subframe, plastics, covers, etc. holds up better on the older bike.... I understand that older bikes are not as competitive as the new ones, but my question is about durability.

Which bike would be in better shape after 50 hours of riding with the same rider? A new YZ250 from 2005 or a new YZ250 from 2019?

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Instagram @motodogg
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12/14/2020 5:38 AM

Do you know what changed from 2005 to 2019 yz250's.

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12/14/2020 5:57 AM

I think Any dirt bike is only as durable as the dude maintaining it. There may have been better, longer lasting materials used 20 years ago, but it’s so hard to tell. These things are built to be flogged. There’s more moving parts on new bikes, so naturally there’s more wear parts. My 19 Yamaha is a work of art compared to my 96 RM, but it probably should still be torn down after every season.

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12/14/2020 6:02 AM

timobijnen84 wrote:

Do you know what changed from 2005 to 2019 yz250's.

Well, not much. In this case 1999 YZ250 vs 2019 YZ250?

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12/14/2020 6:11 AM

crowe660 wrote:

I think Any dirt bike is only as durable as the dude maintaining it. There may have been better, longer lasting materials used ...more

Thank you, but how do you maitain a subframe or a radiator?

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Instagram @motodogg
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12/14/2020 6:14 AM

I dont think newer bikes last shorter. Some products are not good but that was the case with older bikes. 2018 Honda clutches were bad. Kxf subframes broke. I never had an oldtimer but i think this was the case with old bikes also.

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12/14/2020 7:27 AM

I have some machines from the 70's, 80's, 90's, 00's, 10's, and now 20's. The 70's to me seemed to be a learning process for some manufactures, low tech, low quality, but improved from year to year, Frames would break, engine issues, only thing that seemed to hold together was a carb if you could get it dialed. Mid to late 80's stuff seemed to be pretty solid, but there were some issue as with anything. In the 90's, as time went on, more tech with better manufacturing & quality controls in place, seemed to build a much better product than just ten years earlier. It was night and day. My opinion from the 00's to just now are very close to quality in durability. Only major chance/improvement is FI, and the electronics capability to tune a bike's engine. They have gotten lighter, easier to ride faster, but with any mechanical device, you need to maintain it, within the specs of what the engineers designed it. I don't believe the common rider realizes that the fun machine they're ridding on is no different than any other engineered device, and it needs constant care, or else. But all in all, I would say that stuff from yesteryear is the same in durability as the new stuff now, Just my 2 pennies.

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EPHESIANS 6:11

12/14/2020 7:29 AM

crowe660 wrote:

I think Any dirt bike is only as durable as the dude maintaining it. There may have been better, longer lasting materials used ...more

MotoDogg wrote:

Thank you, but how do you maitain a subframe or a radiator?

Clean it properly, protect it properly, repair it properly if necessary. Ex braces and guards, simple shit 🤷🏻‍♂️

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12/14/2020 7:46 AM

Not the DD I came here for.

Leaving disappointed.

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Violence You Can Believe In

12/14/2020 7:50 AM

I was thinking of this the other day.

Any old bike I’ve ever had seems to take less damage whenever I crash than any new bike I have/had.

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Rent free...

12/14/2020 7:53 AM

MotoDogg wrote:

Well, not much. In this case 1999 YZ250 vs 2019 YZ250?

Dude, the older two strokes were a little more reliable. The most recent ones have similar bottom ends, but the kobs on the top end specs were screwed to 11 or a little past. Need race gas in new 2 strokes these days.

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12/14/2020 8:24 AM

usp4u wrote:

Not the DD I came here for.

Leaving disappointed.

Me too.
I got ya covered though.
Photo

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12/14/2020 8:57 AM

The generalization that lighter=weaker can’t be assumed, material can be more efficiently placed making it lighter and stronger, better materials that are lighter and stronger and better manufacturing processes, people said the same thing about the car industry but now cars last clear over 200k, or worse the argument of old cars are safer cause they are solid because people don’t understand forces and crumple zones

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12/14/2020 10:56 AM

i feel like kawis have always been chinsy, same with suzuki but supposedly the newer ones (suzukis) are reliable.

i had RMs and while i liked them alot, there was no comparing the quality between the RM and the CRs that i owned. i would always get compliments at the track about how clean my bikes were (my cr250s) and it was never like that w/ the RM. keep in mind i always maintain and keep my bikes fresh.

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12/14/2020 12:27 PM

I think the OP's question can definitely apply to plastic. I don't remember which brand started it, but sometime in the last 20 years, someone touted "thinner plastic" as a weight-saving measure.

I'd be surprised to find that newer bikes in general are less reliable than older ones. As for the difference between an '05 YZ250 and a '21 YZ250, I don't think there can be a statistically relevant difference.

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Braaapin' aint easy.

12/14/2020 12:28 PM

vtec wrote:

i feel like kawis have always been chinsy, same with suzuki but supposedly the newer ones (suzukis) are reliable.

i had RMs ...more

I don’t think Kawi’s are chinsy. But they lose their fit and finish before most other brands. In my opinion lf course.

I guess what I’m saying is they seem to show their hours more than a honda lets say..

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Rent free...

12/14/2020 5:26 PM

I worked in a bike shop for 40+ years, I could never see much difference between the 4 brands as far as quality or failure rates. It was always hit and miss as far as problems go, every brand had a stinker every now and then. A few that come to mind: Honda tin-can cranks in CR's, '89 RM125's would seize every 5 minutes, '87 KX80's had issues with piston ring snagging until we used a different piston, Yamaha YZ490 rattle, ping seize. Yamaha really built a good 2 stroke engine overall.

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12/14/2020 8:38 PM

My 98 YZ was a turd, the subframe would bend if I looked at it wrong. My 04 KX250 stock handlebar bent the first time I laid it over, the rest of it was impressive though. Ran the stock shrouds and graphics for 5 years. My 07 WR250F was bullet proof other than the weak radiators and white lines in the plastic. My 19 YZ450FX seems to be much improved on the plastic and radiators, no issues at all in 2 years, so I'm saying they are actually more durable now.

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12/14/2020 8:46 PM

Buy a zook, thank me later. #rmarmy

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12/14/2020 8:52 PM

KTM way more reliable than any Japanese bike ever thought of being.

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12/15/2020 4:39 AM

That's not what DD stands for

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Motorcycles have been keeping me smiling for 19 years and counting!

The Chap - My YouTube channel. Trying to share the stoke!
https://www.youtube.com/channel/UCqTZ4lNA_xYv6N2DS4L1Now

12/15/2020 4:40 AM

The YZ250 is the best bike on the market. Just picked up a second (new) one this weekend. The other bike has 90 hard hours on it, and it is still strong. My ktm’s felt worse at 35 hours (16 450sxf) and 80 hours (13/14 250sx). Nice bikes, but overall, they aren’t as strong as a yamaha or Honda. Photo

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12/15/2020 4:47 AM

cloud41 wrote:

The YZ250 is the best bike on the market. Just picked up a second (new) one this weekend. The other bike has 90 hard hours on ...more

Best bike on the market is very subjective!

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12/15/2020 5:26 AM

cloud41 wrote:

The YZ250 is the best bike on the market. Just picked up a second (new) one this weekend. The other bike has 90 hard hours on ...more

Man that thing is sweet! Currently trying to find one local to me now. Really don't like the blue wheels they have on them now but I can't find anything used...and want a new one :D. They are some solid bikes, for sure.

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Motorcycles have been keeping me smiling for 19 years and counting!

The Chap - My YouTube channel. Trying to share the stoke!
https://www.youtube.com/channel/UCqTZ4lNA_xYv6N2DS4L1Now

12/15/2020 5:27 AM

cloud41 wrote:

The YZ250 is the best bike on the market. Just picked up a second (new) one this weekend. The other bike has 90 hard hours on ...more

I have a 2019 YZ250 and respectfully disagree. My TM shits on it in every category, especially build quality. My KTM’s were better bikes all round also. The Yamaha just had brutal fit and finish, castings are ugly, etc.

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Rent free...

12/15/2020 5:36 PM

I have a 16 KTM 350xcf with over 700 original hours on it, seems pretty durable to me...

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12/16/2020 1:52 AM

hypermoto wrote:

I was thinking of this the other day.

Any old bike I’ve ever had seems to take less damage whenever I crash than any new ...more

I have the same experience, old KX is buleltproof, but the 16 KXF feels like made out of eggshells.

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Instagram @motodogg
#MotocrossWithBenefits

12/16/2020 5:44 AM
Edited Date/Time: 12/16/2020 5:45 AM

MotoDogg wrote:

I have the same experience, old KX is buleltproof, but the 16 KXF feels like made out of eggshells.

They must not be made out of eggshells because my 2018 kx250f had 80 hours (all track time) when I sold it and I never replaced a single part other than tires, chain and front sprocket, suspension service, muffler packing.

Ran and felt like the day it came off the showroom.

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12/16/2020 6:43 AM
Edited Date/Time: 12/16/2020 6:45 AM

hypermoto wrote:

I was thinking of this the other day.

Any old bike I’ve ever had seems to take less damage whenever I crash than any new ...more

MotoDogg wrote:

I have the same experience, old KX is buleltproof, but the 16 KXF feels like made out of eggshells.

LKHill wrote:

They must not be made out of eggshells because my 2018 kx250f had 80 hours (all track time) when I sold it and I never ...more

80 hours is not an impressive amount of hours. At all. It’s nothing. There’s guys on here that haven’t touched their KTM motors for 400 hours. Most bikes will go 80 hours with just a chain, sprockets and tires. 80 hours is nothing, bikes fresh still. I’m not sure why people on this forum talk about anything over 50 hours being a lot. 300+ hours and now you’re doing something

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Rent free...

12/16/2020 6:59 AM
Edited Date/Time: 12/16/2020 7:01 AM

hypermoto wrote:

80 hours is not an impressive amount of hours. At all. It’s nothing. There’s guys on here that haven’t touched their KTM ...more

I agree. My point being eggshells don't last 80 hours on a mototrack ridden hard.

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