Seabag Posted Wednesday at 05:12 PM Report Share Posted Wednesday at 05:12 PM I'm new here and have just bought a used 2019 Vertigo Combat Vertical 250cc. I'm about to change the oil in both front forks, but I'm a bit unsure about the correct oil level. In the service manual for the bike, it says the oil level should be 130 mm in both forks. However, in the service manual for the forks — which are Tech Suspension — it states that the level should be 130 mm in the left fork and 75 mm in the right. Which one should I trust? Quote Link to comment Share on other sites More sharing options...
Tr1AL Posted Wednesday at 05:25 PM Report Share Posted Wednesday at 05:25 PM @Seabag this matches the service manual you have so looks like you have the answer. https://vertigomotors.co.uk/technical/ 1 Quote Link to comment Share on other sites More sharing options...
konrad Posted Wednesday at 05:31 PM Report Share Posted Wednesday at 05:31 PM Short answer: probably Tech. The left side has the wire spring, so a lower fluid level tends to compensate and gives a similar air chamber volume as a higher level without a spring. But ultimately, those numbers are just a starting point. The fluid level affects the bottoming behavior. Different riders may require/prefer different settings. It's easier to add oil (using a syringe) than to remove it. More info here: https://www.electricmotiontech.com/home/em-epure-race/mechanicals/tech-39mm-forks 1 Quote Link to comment Share on other sites More sharing options...
Tr1AL Posted Wednesday at 05:59 PM Report Share Posted Wednesday at 05:59 PM @ Seabag https://blog.splatshop.co.uk/tech-suspension-fork-oil-levels/ IPONE oil 3WT for = to FORMULA recommended OJ01 FORK OIL . as stated in the blog. 1 Quote Link to comment Share on other sites More sharing options...
Seabag Posted 11 hours ago Author Report Share Posted 11 hours ago I appreciate all the responses, they really helped me. 1 Quote Link to comment Share on other sites More sharing options...
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