2020 Husky 501 OR 2020 YZ450

[GlennRMK]

The 19+ Hondas make the most power of any of the bikes. I'm assuming the 21 will have more and the hydraulic clutch, which should be improved.

Rev limit into the 13s on a 450 sounds like a bad idea to me.

The 17 and older YZ or 18 and older FX don't seem to have the bottom end issues the new ones do (at least 18-19s). I haven't heard if the the fixed the bottom end on the 20s.

I personally would consider snowbiking a 501 just because I would like to ride it in the dirt a little bit. With mods they can make power, but the wide ratio box isn't ideal nor are the soft forks.

 

[wwillf01]

13k is fine if you are not just holding it in those rpms. Put almost 180 hours on my engine last season and it held up great. For me the rev limiter is used for a get me out of jail free card when you just need a little more to do what ever...

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[byeatts]

The 19+ Hondas make the most power of any of the bikes. I'm assuming the 21 will have more and the hydraulic clutch, which should be improved.

Rev limit into the 13s on a 450 sounds like a bad idea to me.

The 17 and older YZ or 18 and older FX don't seem to have the bottom end issues the new ones do (at least 18-19s). I haven't heard if the the fixed the bottom end on the 20s.

I personally would consider snowbiking a 501 just because I would like to ride it in the dirt a little bit. With mods they can make power, but the wide ratio box isn't ideal nor are the soft forks.

When ewe suggest 13K rpm sounds like a bad idea , I assume ewer looked at the engineering of the motor and size of bearings, crank design , type of overhead cams , springs bore and stroke to determine that? the 501 will be a fine snowbike, It will never be great bouncing off the rev limiter and is as annoying as it gets and I hit it 100,s of times per ride. there is no overrev on the 501 , It simple signs out.

 

[GlennRMK]

A 1500+ RPM bump in the limiter seems like a lot without valve springs and cam change

 

[wwillf01]

For sure I changed the cams... again my bikes pretty modified... but if we are talking about potential...

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[Cooksend]

But you have to remember if you put an ecu on the motocross bikes comparing apples to apples then you rev limiter is in the high 13's.. my 450sxf never signs off... it revs for fooooorrrrreeeevvvveeerrrrr..

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But is it still building power? Is it doing it reliably?

 

[wwillf01]

Power starts dropping off at 12k..

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[byeatts]

Yes , the power starts to flatten out at 12k rpm however it will still overrev considerably which builds as mush as 10mph track speed as the track unloads. The Overrev is crucial advantage if the rider has advanced skills.

 

[CB-BLR]

Good evening gentlemen...I believe the original poster asked about a 2020 Ktm 500 or a 2020 yamaha. Both are great bikes...but I think most of the comments about the previous generation of 500's are inconsequential. The 2020 Ktm 500's have the 450 sx head from the previous year, along with higher compression pistons than previous years, and a more aggressive cam. A 2020 Ktm 500 will flat out walk away from previous models of this bike. I have had a 2018 500 with a vortex ecu by PR2, along with an opened up and de-smogged intake, and a FMF exhaust...My son now has it. I outweigh him by 50 lbs, and my 2020 with the same gearing and same mods pulls away from him in every gear. That is with the same super-moto wheels and tires on both bikes. I just sent off my thottle body to PR2 to have it bored and then I will have it dynoed here locally. Previous to the throttle body mod my 2020 made 61hp on the dyno, at about 1000 rpm above the 2018 bike which made 56 hp on the same dyno. The power on the 2020 500 is more linear than the 2018, and revs quicker and higher. Just my observations. I have not drag raced a 2020 Yamaha on either the snow or street...so I can not comment on them.

Chris

 

[Rayster]

Seeing all these post about RPMs makes me think its time for an upgrade. Still riding a 2016 450x (carb). Pretty much revs to 7500.

 

[CB-BLR]

I don't know how to edit my post....but ktm also lightened the rotating assembly for 2020 on the 500.

Chris

 

[dooman92]

Chris, interesting info regarding the 2020 500. I have a 2018 with pr2, throttle bore, open intake and exhaust and 13/1 hc piston. Does your 18 have stock throttle body and piston?
What elevation is the dyno? 61 hp is impressive. Does the 2020 have similar torque to the 18? Have either of the bikes been on snow?

 

[CB-BLR]

Chris, interesting info regarding the 2020 500. I have a 2018 with pr2, throttle bore, open intake and exhaust and 13/1 hc piston. Does your 18 have stock throttle body and piston?
What elevation is the dyno? 61 hp is impressive. Does the 2020 have similar torque to the 18? Have either of the bikes been on snow?

The 18 has the stock throttle body and piston, as did the 2020. Elevation is aprox 500ft...in the Seattle area...which has really good air. Exact hp was 60.7 hp. Both bikes have had my 2019 ARO 137 on them. Torque feels similar on the snow...but the 2020 is more rev happy. I am excited to see what the bored throttle body does on the dyno and snow.

 

[eric82930]

Glad to hear they are finally putting the 450 tech into the 500s. Do you know if the exc dual sport gets the same parts other than smog and programming?

 

[POLZIN]

YZ would be my choice . I have not been impressed by any of the KTMs I've ridden /ridden with. I am a big fan of the intake on the YZs . Its never ever a problem.

 

[byeatts]

Glad to hear they are finally putting the 450 tech into the 500s. Do you know if the exc dual sport gets the same parts other than smog and programming?

larger cc and longer stroke of the 500 makes Torque, simple Physics are why the larger cc will never rev like the 450, The 500 we built with piston no reeds and cam with PR2 tuner has the same dyno HP numbers as the Race 450 SX however they still sign out at a much lower RPM, Its not all about simple HP stats. RPM is what spins the track faster .the 500 is still bouncing off the rev limiter all day even with an additional 500 RPM added with tuner.500 make the power/Torque at a lower RPM

 

[dooman92]

Chris, yeah looking forward to seeing the results of the throttle bore. I did mine before ever riding the bike on snow and no dyno so not sure on impact of that mod?
Byeatts, I need to ride a 450 more and attempt to use the high rpm as you describe. I know on my fx I hit limiter more because with less torque I had to be at limiter to carry next gear in some situations. On the 500 I can shift up without being at the limiter and still carry the higher gear with increased track speed so, I don't hit limiter near as often on my 500 as the fx. I also have better luck on the 500 if I have to stay in a single gear. But, maybe if I learned how to ride at higher rpm I could keep up with my 20 some year junior riding buddies ..

 

[CB-BLR]

Glad to hear they are finally putting the 450 tech into the 500s. Do you know if the exc dual sport gets the same parts other than smog and programming?

Yes...the exc gets the same mechanical parts as the XCFW with the exception of the smog and programming. (The XCFW has a dual position ignition and traction control as well)

 

[byeatts]

Chris, yeah looking forward to seeing the results of the throttle bore. I did mine before ever riding the bike on snow and no dyno so not sure on impact of that mod?
Byeatts, I need to ride a 450 more and attempt to use the high rpm as you describe. I know on my fx I hit limiter more because with less torque I had to be at limiter to carry next gear in some situations. On the 500 I can shift up without being at the limiter and still carry the higher gear with increased track speed so, I don't hit limiter near as often on my 500 as the fx. I also have better luck on the 500 if I have to stay in a single gear. But, maybe if I learned how to ride at higher rpm I could keep up with my 20 some year junior riding buddies ..

All Good choices. I built and ran both bikes side by side both new Yeti kits, much more lively ride on the 450sx and all due to the higher RPM. Ewe can keep rpm,s down and try higher gear on the 500 however as the track unweights on climbs it smack on the rev limiter every time and the 450 walks away. However Both great bikes you cant go wrong

 

[GlennRMK]

I don't think the 500 works poorly, I just think the 450 works better for an aggressive rider.

As I mentioned, I would consider a 500 just to have a superior single track bike.

Seems like the Yamaha reliability has gone away since 18. At least the bottom end durability.

Anyone heard of issues with the 20-21 bottom end? Seems like 18s and 19s have not been good.