Reply To: GT125 to GT250 (engine transformation help) Jun 16, 2018 at 9:28 PM #1295 ♠️ M77👑 Admin Topics: 40Replies: 3,033Country: UKBike Model: GT Truthfully speaking? – There is a high chance the “125” crank-cases may not work out too well on the 250cc machine , also i know that 250 generally have bigger parts with better bearings for them also. It’s a gamble, on your end!
