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YZDAD Liked a reply to forum topic MUST have YZ250 mods? 13' in particular

6/10/2022 3:17pm
By far the best improvement to make is the RB Designs head mod. The squish is too large on OEM heads. The ones that I have checked have all been around .080" and for best combustion should be closer to .040". You won't be disappointed!
This forum topic has 51 replies.

ginger969 Liked a reply to forum topic MUST have YZ250 mods? 13' in particular

6/10/2022 3:17pm
Here's how she sits today Smile
This forum topic has 51 replies.