Show #505 - 2026 KTM 450 SX-F Chassis/Suspension Talk with Mark Johnson
Rocky Mountain ATV/MC Keefer TestedShow Notes
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
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