2026 Beta 250 RX

12/8/2025 6:20pm
Silly question. I am about to get a 2026 Beta 450RX. I currently have a 2025 YZ450F. I have so much money in my current suspension...

Silly question. I am about to get a 2026 Beta 450RX. I currently have a 2025 YZ450F. I have so much money in my current suspension. Mainly the forks. Full A Kit. Does anyone know if the beta axle is same as the YZ? I’d sure love to slide my forks into my Beta and then just get my a beta shock setup to match. 

Luxon MX wrote:
You'll have to deal with the hub width difference, regardless of axle diameter. Fork legs are spread apart 2 mm more on the YZF than Beta...

You'll have to deal with the hub width difference, regardless of axle diameter. Fork legs are spread apart 2 mm more on the YZF than Beta. You might be able to turn down the wheel spacers 1 mm each? And you'll have to deal with rotor alignment as I bet it's different after all that. May be better off getting new fork lugs and be done with it, assuming the fork length is correct. 

Thank you. When I get the bike, I’ll compare the components. I wasn’t sure if anyone had direct knowledge of this yet. 

1
12/11/2025 12:51pm
Silly question. I am about to get a 2026 Beta 450RX. I currently have a 2025 YZ450F. I have so much money in my current suspension...

Silly question. I am about to get a 2026 Beta 450RX. I currently have a 2025 YZ450F. I have so much money in my current suspension. Mainly the forks. Full A Kit. Does anyone know if the beta axle is same as the YZ? I’d sure love to slide my forks into my Beta and then just get my a beta shock setup to match. 

Unless you have full A-kit will all the coatings and fancy stuff, it might be easier to just swap cartridges. 

1
12/12/2025 10:58am
Thanks for the detailed write up!.. I was surprised you put the 20.5mm clamps on the 2-stroke. That mod is usually reserved for the Beta 4-stroke...

Thanks for the detailed write up!.. I was surprised you put the 20.5mm clamps on the 2-stroke. That mod is usually reserved for the Beta 4-stroke. My Beta 300 RX really likes tight turns, but I couldn't imagine going any steeper on the steering angle for motocross.. I think it would cause the front to want to knife in. Our bikes have the same frame and geometry and I hadn't felt what you felt with regard to the front wheel feeling too far out. When I read your comment, I thought you must be a woods guy rather than motocross. Is that the case?

I haven’t had it in the woods, there’s not that type of riding where I am. I’ve had it on several different moto tracks, technical rocky...

I haven’t had it in the woods, there’s not that type of riding where I am. I’ve had it on several different moto tracks, technical rocky off-road, and high speed desert sand. So far I haven’t had a problem with knifing, but it does love the tight turns. The biggest problem I noticed was more in the shock, the stock valving packed up bad in the mid-stroke and wanted to kick forward. Opening the high speed compression helped. That’s why I want to try the Factory suspension, they say it has a more linear dampening curve. So I guess it just comes down to rider preference with the clamps, I like the front end feel they gave the bike. 

If Beta is saying that all these RX 2T's are using the same valving in the suspension, I am a bit surprised when some magazines are...

If Beta is saying that all these RX 2T's are using the same valving in the suspension, I am a bit surprised when some magazines are saying it was a bit too stiff, while others are saying it is too soft. In my case, the rear was a bit too stiff at stock clicker settings, at least for the first few rides, but the biggest issue was the shock rebound was way too heavy. If I pushed down on the seat with my hand, it was so slow that you couldn't see it spring back like you normally would. If yours is similar, crank the rebound dampening off by about 20-24 clicks out. It made a huge difference on my bike.. it was barely rideable until I did that.  I will have my suspension guy take a close look at my rebound circuit.

Trying a ride engineering rear link on my next ride, maybe I’m too eager to spend money on chassis parts but oh well. I agree the rear was too stiff, I was running almost no preload and turned pretty far out on my clickers. The link lowers the rear 10mm but in turn has more leverage on the shock giving it a softer and more linear feel. We’ll see how it goes. 

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avidchimp
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12/12/2025 12:26pm
I haven’t had it in the woods, there’s not that type of riding where I am. I’ve had it on several different moto tracks, technical rocky...

I haven’t had it in the woods, there’s not that type of riding where I am. I’ve had it on several different moto tracks, technical rocky off-road, and high speed desert sand. So far I haven’t had a problem with knifing, but it does love the tight turns. The biggest problem I noticed was more in the shock, the stock valving packed up bad in the mid-stroke and wanted to kick forward. Opening the high speed compression helped. That’s why I want to try the Factory suspension, they say it has a more linear dampening curve. So I guess it just comes down to rider preference with the clamps, I like the front end feel they gave the bike. 

If Beta is saying that all these RX 2T's are using the same valving in the suspension, I am a bit surprised when some magazines are...

If Beta is saying that all these RX 2T's are using the same valving in the suspension, I am a bit surprised when some magazines are saying it was a bit too stiff, while others are saying it is too soft. In my case, the rear was a bit too stiff at stock clicker settings, at least for the first few rides, but the biggest issue was the shock rebound was way too heavy. If I pushed down on the seat with my hand, it was so slow that you couldn't see it spring back like you normally would. If yours is similar, crank the rebound dampening off by about 20-24 clicks out. It made a huge difference on my bike.. it was barely rideable until I did that.  I will have my suspension guy take a close look at my rebound circuit.

Trying a ride engineering rear link on my next ride, maybe I’m too eager to spend money on chassis parts but oh well. I agree the...

Trying a ride engineering rear link on my next ride, maybe I’m too eager to spend money on chassis parts but oh well. I agree the rear was too stiff, I was running almost no preload and turned pretty far out on my clickers. The link lowers the rear 10mm but in turn has more leverage on the shock giving it a softer and more linear feel. We’ll see how it goes. 

Can't wait to hear your thoughts on this.

2

The Shop

Tokyo_Tiddler
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12/12/2025 8:09pm
I haven’t had it in the woods, there’s not that type of riding where I am. I’ve had it on several different moto tracks, technical rocky...

I haven’t had it in the woods, there’s not that type of riding where I am. I’ve had it on several different moto tracks, technical rocky off-road, and high speed desert sand. So far I haven’t had a problem with knifing, but it does love the tight turns. The biggest problem I noticed was more in the shock, the stock valving packed up bad in the mid-stroke and wanted to kick forward. Opening the high speed compression helped. That’s why I want to try the Factory suspension, they say it has a more linear dampening curve. So I guess it just comes down to rider preference with the clamps, I like the front end feel they gave the bike. 

If Beta is saying that all these RX 2T's are using the same valving in the suspension, I am a bit surprised when some magazines are...

If Beta is saying that all these RX 2T's are using the same valving in the suspension, I am a bit surprised when some magazines are saying it was a bit too stiff, while others are saying it is too soft. In my case, the rear was a bit too stiff at stock clicker settings, at least for the first few rides, but the biggest issue was the shock rebound was way too heavy. If I pushed down on the seat with my hand, it was so slow that you couldn't see it spring back like you normally would. If yours is similar, crank the rebound dampening off by about 20-24 clicks out. It made a huge difference on my bike.. it was barely rideable until I did that.  I will have my suspension guy take a close look at my rebound circuit.

Trying a ride engineering rear link on my next ride, maybe I’m too eager to spend money on chassis parts but oh well. I agree the...

Trying a ride engineering rear link on my next ride, maybe I’m too eager to spend money on chassis parts but oh well. I agree the rear was too stiff, I was running almost no preload and turned pretty far out on my clickers. The link lowers the rear 10mm but in turn has more leverage on the shock giving it a softer and more linear feel. We’ll see how it goes. 

Thanks, I looked to see if any companies offered a revised knuckle as that will have the most effect on the progressiveness of the rear suspension stroke.  My take was that the revised linkage pull rods being sold by many companies for the Beta's are mainly intended to lower the seat height and are expected to be used with shortening of the front fork stroke or you may end up messing up the very good handling characteristics that the Beta's have,  I don't think they have been designed with the objective of achieving a specific change in the suspension action, though it may have some effect.

It is winter downtime now where I am so I plan to take apart the rear shock over the next month or so to see what is going on. I should not have had to turn the rebound out 24 clicks to make it work decent. The rebound and compression circuits are not entirely separate in these production shocks so by reducing the rebound dampening, I also reduced the compression dampening. It was a very big improvement in my case so I have to wonder if something is not right in the shock.  Good luck with the link experiment.

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Luxon MX
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Fantasy
12/13/2025 8:04am

The link can be useful if you're looking for a lower rear end or a more raked out front end to add stability. It won't have much effect on the motion curve, but in general the longer the link, the more linear the curve gets, which isn't typically a good thing. But that change is typically pretty small unless the link gets really long. 

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Tokyo_Tiddler
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12/14/2025 5:13pm Edited Date/Time 12/14/2025 5:38pm

I was hoping this thread would generate more feedback on the engine characteristics from guys that bought the new 250 and 350 RX's.  The few reviews of the 250 I have seen have reported that the 250 RX pulls like a traditional 250 2T with plenty of top end pull.  Not surprising as it runs the same size 38mm carb as the bigger bikes and has notably higher cylinder compression than the 300 or 350 RX. I did see some Vital posts about the Beta's being down on power compared to a Japanese 250 2 stroke, but that couldn't be further from the truth if we are talking about the 2025+ models.  My 2025 300 RX has a lot more lowend torque, but a bit flatter on the top than my 2001 CR250, but that is expected and in no way feels underpowered.  This past season, I rode my Beta back -to-back with my CRF450, and again it doesn't feel like I am giving up that much to the 450, though I would give a slight edge to the 450 4 stroke.  There is a big staircase jump right after a 90 degree turn on one track I ride, that (for those of us that don't have the fastest corner speed) requires quite a bit of horsepower to clear the whole thing and land down the other side. For my old ass, it is fun to see how fast I can put power to the ground out of the corner and see how far you can land down the other side. This was a great way to compare the 300 RX and CRF450 real world power output, and I can say that the 300 RX does almost as well as the CRF450. No way are the Beta's an underpowered MX machine.

Another good example, and this is what convinced me to buy the 2025 Beta 300 RX, was how well Dare DeMartile and Bryson Gardener did at this year's 2 stroke nationals at Glen Helen. They competed against some of the fastest 2 stroke riders on some pretty trick KTM's, Yamaha's, etc... and Gelen Helen is definitely a power track for sure with the very long start straight and big steep uphills. Carson Brown was on an uber trick RM300 with a KTM engine breathed on heavily by Twisted development (see link below).  I am not sure what DeMartile and Gardner had done to their porting and compression, but they were running the stock plated exhaust pipe with just an FMF silencer. They had a lot of stock parts on their Beta's and they placed 2nd and 4th overall against some pretty trick 2 stroke machines of all makes.  You just can't pull that off with an underpowered bike compared to other manufacturers.  People shouldn't be so concerned that the Beta's power might be not as competitive, but focus more on how well they think Beta has put together a package compared to the Japanese and Austrian bikes, and how much that suits them.  I am really looking forward to trying out the 350 RX next year.

Check out Carson Brown's very trick RM300 from the 2 stroke nationals here;

(3) Carson Brown's Suzuki RM300: Unleashing the Beast! - YouTube

 

4
1
12/16/2025 3:59pm
I was hoping this thread would generate more feedback on the engine characteristics from guys that bought the new 250 and 350 RX's.  The few reviews...

I was hoping this thread would generate more feedback on the engine characteristics from guys that bought the new 250 and 350 RX's.  The few reviews of the 250 I have seen have reported that the 250 RX pulls like a traditional 250 2T with plenty of top end pull.  Not surprising as it runs the same size 38mm carb as the bigger bikes and has notably higher cylinder compression than the 300 or 350 RX. I did see some Vital posts about the Beta's being down on power compared to a Japanese 250 2 stroke, but that couldn't be further from the truth if we are talking about the 2025+ models.  My 2025 300 RX has a lot more lowend torque, but a bit flatter on the top than my 2001 CR250, but that is expected and in no way feels underpowered.  This past season, I rode my Beta back -to-back with my CRF450, and again it doesn't feel like I am giving up that much to the 450, though I would give a slight edge to the 450 4 stroke.  There is a big staircase jump right after a 90 degree turn on one track I ride, that (for those of us that don't have the fastest corner speed) requires quite a bit of horsepower to clear the whole thing and land down the other side. For my old ass, it is fun to see how fast I can put power to the ground out of the corner and see how far you can land down the other side. This was a great way to compare the 300 RX and CRF450 real world power output, and I can say that the 300 RX does almost as well as the CRF450. No way are the Beta's an underpowered MX machine.

Another good example, and this is what convinced me to buy the 2025 Beta 300 RX, was how well Dare DeMartile and Bryson Gardener did at this year's 2 stroke nationals at Glen Helen. They competed against some of the fastest 2 stroke riders on some pretty trick KTM's, Yamaha's, etc... and Gelen Helen is definitely a power track for sure with the very long start straight and big steep uphills. Carson Brown was on an uber trick RM300 with a KTM engine breathed on heavily by Twisted development (see link below).  I am not sure what DeMartile and Gardner had done to their porting and compression, but they were running the stock plated exhaust pipe with just an FMF silencer. They had a lot of stock parts on their Beta's and they placed 2nd and 4th overall against some pretty trick 2 stroke machines of all makes.  You just can't pull that off with an underpowered bike compared to other manufacturers.  People shouldn't be so concerned that the Beta's power might be not as competitive, but focus more on how well they think Beta has put together a package compared to the Japanese and Austrian bikes, and how much that suits them.  I am really looking forward to trying out the 350 RX next year.

Check out Carson Brown's very trick RM300 from the 2 stroke nationals here;

(3) Carson Brown's Suzuki RM300: Unleashing the Beast! - YouTube

 

For who the bike is made for (primarily vets and weekend warriors) the power is great, as it’s marketed it’s the most rideable 250 2T on the market. And that’s not undermining the performance, like I mentioned in my initial post about the 250 RX, I came from KTM 250’s with substantial motor work done and the RX keeps up all day. The motor revs very quick so it gives the impression that it has more power than it dynos at. A guy in my group has a 300 RX and everyone that rides the two back to back agrees the 250 is just better. There’s easy performance to unlock to suit a more aggressive rider with a little bit of jetting also. While it does have good over-rev once it’s done there’s no convincing it otherwise(any motor basically so whatever) but my KTM’s have just a little more on top. I’m not sure if there’s a lot to gain with a pipe, maybe just move the power around a bit, like you said the top guys just had FMF silencers. MXA’s recently published article said there was little to performance on the dyno or track with a PC pipe, but anyways I have a Bills pipe and silencer on the way. I tore into the top and a few days ago just to check piston wash, port timing, squish, etc. and like any 2 smoker the port timing could be raised and I think a different shaped dome could bring some power to the table, but I’m not an engineer so don’t trust me. And realistically that’s only going to suit a fast intermediate/pro level rider. So to say the least the motor is great, everybody complaining are just forum warriors who probably haven’t even ridden the bike. 

4
1
1/29/2026 7:35am
I was hoping this thread would generate more feedback on the engine characteristics from guys that bought the new 250 and 350 RX's.  The few reviews...

I was hoping this thread would generate more feedback on the engine characteristics from guys that bought the new 250 and 350 RX's.  The few reviews of the 250 I have seen have reported that the 250 RX pulls like a traditional 250 2T with plenty of top end pull.  Not surprising as it runs the same size 38mm carb as the bigger bikes and has notably higher cylinder compression than the 300 or 350 RX. I did see some Vital posts about the Beta's being down on power compared to a Japanese 250 2 stroke, but that couldn't be further from the truth if we are talking about the 2025+ models.  My 2025 300 RX has a lot more lowend torque, but a bit flatter on the top than my 2001 CR250, but that is expected and in no way feels underpowered.  This past season, I rode my Beta back -to-back with my CRF450, and again it doesn't feel like I am giving up that much to the 450, though I would give a slight edge to the 450 4 stroke.  There is a big staircase jump right after a 90 degree turn on one track I ride, that (for those of us that don't have the fastest corner speed) requires quite a bit of horsepower to clear the whole thing and land down the other side. For my old ass, it is fun to see how fast I can put power to the ground out of the corner and see how far you can land down the other side. This was a great way to compare the 300 RX and CRF450 real world power output, and I can say that the 300 RX does almost as well as the CRF450. No way are the Beta's an underpowered MX machine.

Another good example, and this is what convinced me to buy the 2025 Beta 300 RX, was how well Dare DeMartile and Bryson Gardener did at this year's 2 stroke nationals at Glen Helen. They competed against some of the fastest 2 stroke riders on some pretty trick KTM's, Yamaha's, etc... and Gelen Helen is definitely a power track for sure with the very long start straight and big steep uphills. Carson Brown was on an uber trick RM300 with a KTM engine breathed on heavily by Twisted development (see link below).  I am not sure what DeMartile and Gardner had done to their porting and compression, but they were running the stock plated exhaust pipe with just an FMF silencer. They had a lot of stock parts on their Beta's and they placed 2nd and 4th overall against some pretty trick 2 stroke machines of all makes.  You just can't pull that off with an underpowered bike compared to other manufacturers.  People shouldn't be so concerned that the Beta's power might be not as competitive, but focus more on how well they think Beta has put together a package compared to the Japanese and Austrian bikes, and how much that suits them.  I am really looking forward to trying out the 350 RX next year.

Check out Carson Brown's very trick RM300 from the 2 stroke nationals here;

(3) Carson Brown's Suzuki RM300: Unleashing the Beast! - YouTube

 

For who the bike is made for (primarily vets and weekend warriors) the power is great, as it’s marketed it’s the most rideable 250 2T on...

For who the bike is made for (primarily vets and weekend warriors) the power is great, as it’s marketed it’s the most rideable 250 2T on the market. And that’s not undermining the performance, like I mentioned in my initial post about the 250 RX, I came from KTM 250’s with substantial motor work done and the RX keeps up all day. The motor revs very quick so it gives the impression that it has more power than it dynos at. A guy in my group has a 300 RX and everyone that rides the two back to back agrees the 250 is just better. There’s easy performance to unlock to suit a more aggressive rider with a little bit of jetting also. While it does have good over-rev once it’s done there’s no convincing it otherwise(any motor basically so whatever) but my KTM’s have just a little more on top. I’m not sure if there’s a lot to gain with a pipe, maybe just move the power around a bit, like you said the top guys just had FMF silencers. MXA’s recently published article said there was little to performance on the dyno or track with a PC pipe, but anyways I have a Bills pipe and silencer on the way. I tore into the top and a few days ago just to check piston wash, port timing, squish, etc. and like any 2 smoker the port timing could be raised and I think a different shaped dome could bring some power to the table, but I’m not an engineer so don’t trust me. And realistically that’s only going to suit a fast intermediate/pro level rider. So to say the least the motor is great, everybody complaining are just forum warriors who probably haven’t even ridden the bike. 

Did you get your Bill’s pipe yet?

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