Fork Oil Upgrade, Thickness & Volume: Ninja 400 Project Ep 6 View Larger Image Fork Oil Upgrade, Thickness & Volume: Ninja 400 Project Ep 6 Premium Video Trailer. To watch the full video please upgrade and Go Premium. The Kawasaki Ninja 400 front fork was pogo’ing right off the showroom floor. Also the progressive fork springs were allowing too much brake dive. Time to upgrade. Dave Moss2022-01-05T20:58:52-08:00 Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInPinterestVk Related Posts 2 Clicks Out: Aprilia RST 1000 Futura Suspension Setup January 20th, 2022 | 0 Comments 2 Clicks Out: Yamaha MT-09 Street & Track Suspension Setups January 13th, 2022 | 0 Comments 2 Clicks Out: Bone Stock vs Superstock GSX-R1000R Suspension December 30th, 2021 | 1 Comment Fixing Motorcycle Crashes To Save A Track Day December 23rd, 2021 | 0 Comments 2 Clicks Out: Ducati Monster 1200 S Suspension Setup December 16th, 2021 | 1 Comment 4 Comments Darkknight January 6, 2022 at 3:50 amLog in to Reply Great content on the fork oil change defining mechanical bottom out V hydraulic bottom out and usage of the air spring I have a better understanding of this now and I will put into practice the next time I upgrade or change my fork oil aaronaleixo January 7, 2022 at 1:22 amLog in to Reply Amazing vídeo! Really good! But if is invert suspension like a mt09 with one leg with rebound and the other with compression adjustament is the same method? Thank you,have Nice day 😊 faffi January 13, 2022 at 11:24 amLog in to Reply Interesting video, as per usual. I am curious, however, why you use the term hydro-locking on compression with stock level oil volume. Would it not be present oil around the bottoming cone that create hydro-lock, regardless of how much extra oil is sitting above it? In my simple mind, it would be the combined forces of spring, air spring and compression damping that prevent the fork to reach bottom during the bounce travel test, but I am open to being wrong. Alana Spurling January 21, 2022 at 11:01 amLog in to Reply Thank you Dave, as always very informative video. I’m also in the process of building a Honda CBR250R as a track bike, and I suspect that the forks used on that are nearly identical to these. I’m upgrading the front springs with some 90 kg/mm springs, and changing the fork oil. My donor has 15k miles and who knows when/ if the fork oil has ever been changed. Anyway I’m looking forward to what you’re going to do about the rear damper…. Leave A Comment Cancel replyYou must be logged in to post a comment.