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scott_k2003 Started a new thread Previous Gen KX 250 vs. Newest Gen KX 250
11/20/2025 4:43pm Seeking some opinions from fellow members. Long story short, I have a '21 KX 250 with less than 50 hours on it. Fresh tires, seals, bearings, chain and sprockets, new plastics. Overall, in very good condition. I was originally intending to sell it and purchase a newer generation '25+ KX 250. Given the poor resale value on the KX's and...
This forum thread has 9 replies.
scott_k2003 Added a reply to 2025/2026 KX 250 With Vortex, Airbox and Exhaust
9/21/2025 10:14am Hey All! Been a while since I was able to get back here. Thanks to everyone for posting their experiences and opinions. I have NOT had an opportunity to ride a newer 25+ KX250. I do have a couple of hours on a '21 KX250 with Vortex that my nephew raced for 2 years. I recognize that not everyone will...
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scott_k2003 Started a new thread 2025/2026 KX 250 With Vortex, Airbox and Exhaust
9/15/2025 3:08pm Anyone have experience with both a 2024-2026 KX450, and '25/26 KX 250 with a Vortex, full PC exhaust, Airbox mod and possibly some gearing? I am still on the fence about downsizing from the 450 to the 250. Hoping these mods might offer a good middle ground between the stock 250 and stock 450. Looking to get as much extra...
This forum thread has 30 replies.
scott_k2003 Started a new thread KX450 - 2025/2026 ECU on a 2024?
8/29/2025 1:00am I find it a bit annoying that Kawasaki would not permit the same window of ECU adjustment between the '24 and then the '25/26. I cannot see someone wanting to upgrade from a '24 to a '25 or '26 model year for the same bike minus an updated ECU (I assume this is the difference?) and frame and bearing issues...
This forum thread has 2 replies.
scott_k2003 Started a new thread JBI DYI vs. Race Tech Spring Conversion for KTM
7/31/2025 2:58am I have been working with the XACT AER48 air on a 2024 SXF for a year. Looking for more comfort than what the stock valving can provide. My major complaint is the forks but I need to address shock valving as well. Although preferrable a full spring conversion is out of my price range. Between the Race Tech single side...
This forum thread has 17 replies.
scott_k2003 Added a reply to Moving from '24 KX450 to '23 350 SXF
7/8/2025 6:14am Thanks for sharing your experience! I would be interested to hear your thoughts after you get a few hours on the KX! I am and have been leaning towards the KYB kit to be honest. For the sake of a couple hundred dollars more, I would prefer to know I am going in a direction that offers the most potential...
Tiki Liked a reply to forum topic Moving from '24 KX450 to '23 350 SXF
7/8/2025 6:06am
Can you tell me what is it about the engines that you like one from another. It seems one is low rev torque, the other is high revving and feels lighter. I have no basis of comparison, but I do like from what I have heard, the 350 is a lot of fun to ride.
This forum topic has 15 replies.
PRM31 Liked a reply to forum topic Moving from '24 KX450 to '23 350 SXF
7/8/2025 6:05am
I have 2024 Husky forks, and rear linkage, on my 24 350 SXF. I had the stock, JBI DIY kit, and now JBI 6500s. My regular track is very deep and rough. The JBI DIY was pretty good. Flat corners and hard pack was the only place I wondered about that led me to try 6500s. Only ridden them one day so far. They are softer on the small stuff for sure and in the corners. It’s the initial movement of the air forks on smaller stuff that feels stiff. In the big stuff they are fine. On the rough...
This forum topic has 15 replies.
wrc777 Liked a reply to forum topic Moving from '24 KX450 to '23 350 SXF
7/8/2025 6:05am
I am seeing used 6500 kits for under $1k US. The 2025 engine hangers help a lot on big hits.
This forum topic has 15 replies.
cwtoyota Liked a reply to forum topic Moving from '24 KX450 to '23 350 SXF
7/8/2025 6:05am
I race a 23 GasGas MC350F with XPR vortex. I am in steamy hot love with the red 350F. It has more than enough power everywhere on the track and has given me consistently good starts plus several holeshots. On my chassis the REP linkage works extremely well combined with better shock valving in the standard shock body / standard adjuster. I don't remember riding a motorcycle with better rear wheel traction. I'm a biased source on the fork stuff since I make drop in KYB conversion kits. I do think KYB stuff has the best mix of front tire...
This forum topic has 15 replies.
scott_k2003 Added a reply to Moving from '24 KX450 to '23 350 SXF
7/8/2025 6:05am Great feedback. Thank you! I am very interested to hear your thoughts as you get more time on your new setup. Did you find much positive improvement of the JBI DIY kit on the smaller, choppy hard pack stuff over stock or mainly just in the fluidity, responsiveness in the first 1/4 of the travel and overall hold-up? Have you...
scott_k2003 Added a reply to Moving from '24 KX450 to '23 350 SXF
7/8/2025 5:44am My experience is similar to what can be found in many reviews and other riders experiences. I like that the 350 revs quicker. It feels livelier and more playful. The KX obviously has more torque, but it is slower to build its power (slower revving). To me this does result in the bike feeling heavier and I do feel the...
scott_k2003 Added a reply to Moving from '24 KX450 to '23 350 SXF
7/8/2025 5:22am Thanks! Mostly intermediate. If prepped, typically starting out soft and tilled in the mornings, changing to dusty hard pack as the day progresses. Some tracks do develop more square edged braking bumps and acceleration chop while some tracks develop more rolling bumps. Many of the tracks do have a combination of sand, but sand-only. Only sand-only track I ride is...
Smith246 Liked a reply to forum topic Moving from '24 KX450 to '23 350 SXF
7/8/2025 5:16am
What terrain do you mainly ride? If it's softer dirt I would stick with air forks and try the JBI kit, if it's more hard pack choppy conditions I'd go a spring kit. My recommendation for spring would be kyb or dal soggio. On my 23 350sxf I felt little to no difference between my well setup stock forks to full kyb's on sand tracks. Where the difference became noticed was on hardpack choppy conditions.
This forum topic has 15 replies.
scott_k2003 Added a reply to Moving from '24 KX450 to '23 350 SXF
7/6/2025 4:12pm Thanks. Have read about them but thinking if I go full spring, I would be better off sticking with the 6500 or KYB conversion for local suspension tuner knowledge and support.
scott_k2003 Started a new thread Moving from '24 KX450 to '23 350 SXF
7/6/2025 1:37pm After a season with both a '23 350 SXF and '24 KX450 I have made the decision to commit to the 350. I am willing to spend some money to get the most comfort out of the 350, since I do not see myself upgrading for a couple of years. Unless there are some significant advances in the next gen...
This forum thread has 15 replies.
scott_k2003 Added a reply to Vortex ECU on 23+ KTM 350SXF
3/23/2025 5:52am Appreciate all the responses. Anyone by chance remapped an older Vortex to work on the '23+ bikes and give up the map switch, traction control and quick shift? If so, any regrets? I do have a Vortex from the previous gen and trying to decide if its worth just having that one mapped or pay three times more for a...
scott_k2003 Added a reply to Vortex ECU on 23+ KTM 350SXF
3/22/2025 7:09am Are you guys on the west coast though with hard pack tracks? How does the Vortex do for softer deeper dirt, sand and mud like east coast tracks?
scott_k2003 Started a new thread Vortex ECU on 23+ KTM 350SXF
3/21/2025 6:13pm Looking for some feedback and opinions on adding a Vortex (Twisted/XPR) to a 2023 KTM 350SXF. Is it worth it? Is there a notable difference in the bottom end power? One of the reasons I am looking into this is to adjust the poor factory mapping. I get constant decel pop in the corners running 93 octane. Would be great...
This forum thread has 60 replies.
scott_k2003 Added a reply to 2023+ KTM Map Switch With Vortex
1/14/2025 9:36am Anyone?