Rocky Mountain ATV/MC Keefer Tested
Kris Keefer

Latest episode
507 episodes
Show #506 - What's It Really Like To Ride Zach Osborne's Factory Beta 450RX?
14/09/2026 | 1h 22 mins.I fly to Florida to ride Zach Osborne's Loretta Lynn's winning Beta 450RX and I take you along with me. Learn about what's involved in Zach's machine, how it runs compared to the stock 450RX, what unique pieces are on Zach's bike, how it rates compared to other factory bikes I've ridden and much more in this episode!
--- CHAPTERS ---
00:37 Intro and sponsor rundown
06:53 Heather and Greg join the show
10:01 Summer School takedown explained
14:33 Setting up the Zach Osborne Beta feature
16:31 Flying to Florida to ride Zach's bike
23:32 First impressions: cockpit and bar setup
30:24 Engine feel and delivery breakdown
35:37 Gearing, ECU and vibration talk
39:56 Chassis comfort and gusseted frame
48:14 Swingarm length and offset geometry deep dive
54:49 Soft fork, stiff shock and suspension feel
1:00:48 BYOB customer program and Vortex ECU dreams
1:08:42 Clutch, brakes, tires and drivetrain details
1:15:38 Fuel boiling issues in Florida heat
1:18:16 Listener Q&A and closing plugs
1:20:58 Next week preview and sign-off- Keefer gets Mark Johnson from REP on the phone to talk about suspension as well as chassis tips for the KTM 450 SX-F. Topics like spring conversion kits, AER set ups, chassis lengths, torque settings, chain slack and more! If you're an orange brigade rider, you will love this show.
--- CHAPTERS ---
00:38 Intro & sponsor rundown
10:21 2026 KTM 450 SX-F project overview
15:12 Getting Mark from REP on the line
16:51 The REP app
19:38 AER fork feel: East Coast vs West Coast
26:27 AER pressure checks & temperature swings
29:29 Nitrogen vs helium fork fills
32:59 REP linkage systems explained
36:00 Husky height vs KTM height confusion
38:10 Factory Edition cone valve first impressions
43:58 Cone valve vs shim stack tech
47:18 KYB vs 6500 spring conversion kits
50:37 Chassis length & torque settings
55:30 Chain slack settings
58:43 Shop trends & new chassis rumors
1:02:05 Wrapping up with Mark & REP plugs
1:05:17 Mid-show ad reads
1:10:47 Recap: comparing REP, Factory Connection & WP settings
1:14:44 Tires, exhaust flange & engine feel
1:15:45 Bars, vibration & clamp offset takeaways
1:20:16 Budget-friendly KTM mods recap
1:22:49 Race plans & sign-off - Keefer breaks down Team Green's latest offering for 2027 as the KX250 received more changes than we thought it would but do those small changes mean anything to you out on the track? Find out all the info on this episode.
--- CHAPTERS ---
00:38 Show intro & sponsor rundown
08:13 2027 KX250 changes overview
11:58 Horsepower claims, FI mapping & head pipe tweaks
17:47 Engine feel vs Yamaha & Honda 250s
23:58 Clutch upgrade & durability concerns
27:44 Blood Lubricants, Ride Engineering, Yamaha & Eagle Grit ad reads
32:09 Chassis geometry & suspension setup
38:31 Vibration improvements & ergonomics
41:56 Is the 27 worth $1,500 more than the 26?
45:08 Wrap-up, KX450 preview & sign-off - The last day of Summer School is here! The final episode! Kris, Heather and Aden take you on a virtual walk through Ironman and let you in on what it's like tackling the Pro Motocross Series as rookies. From tears of joy to epic failures, this episode will have you laughing and busting out the tissue boxes. It's been on honor to take you with us this summer! The final show will encompass it all.
--- CHAPTERS ---
00:39 Season wrap-up intro & sponsor reads
06:19 Ironman recap kicks off & Scuba's bike setup testing
16:08 Honda 250 frame talk & 2026 Phoenix Honda lineup rumors
22:16 Combine talk, age-out rules & Tickle fitness burnout
34:29 Finding the positives & little wins pep talk
40:02 Ironman qualifying breakdown
45:58 Moto 1 recap: gate pick, clutch failure & penalty
57:25 Moto 2 recap: crash, arm pump & getting lapped
1:03:22 Team debrief meeting, 2026 goals & Loretta's mentorship story
1:14:08 Off-season plan: time off, fitness & 2026 schedule
1:20:18 Grading Aden's rookie season & goals for next year
1:24:40 Favorite moments & highlights of the season
1:30:19 Sign-off, Goo Goo Dolls send-off & thank yous - Keefer breaks down the 2027 Yamaha YZ250F from Club MX and gives you info on if this all new blue machine is better than the older version. Do the changes that Yamaha made make for a big improvement on the track? Listen to this episode and find out!
--- CHAPTERS ---
00:00 Show intro
01:44 Sponsor roll call
09:34 YZ250F embargo & Club MX trip setup
10:48 Club MX facility tour
14:38 Engine changes breakdown
19:30 Chassis, suspension & brake spec changes
23:56 First ride: engine feel & power delivery
30:49 Sound reduction & GYTR airbox test
34:01 Sponsor break: ScreenPrintingDone, Blood Lubricants, Ride Engineering
36:55 Sponsor break: Power Motorsports & Eagle Grit
39:12 Chassis riding impressions
42:24 Suspension setup & crash save story
46:17 Clutch feel & engine mapping
50:57 GYTR accessories & pricing
52:38 Ergonomics & final verdict
55:59 Wrap-up & next week preview
About Rocky Mountain ATV/MC Keefer Tested
Kris Keefer puts bikes, gear, accessories, hard parts... you name it, through the paces to bring you the straight verdict.
Podcast websiteRocky Mountain ATV/MC Keefer Tested: Podcasts in Family
