This video shows how I blew a dent out of an FMF Gnarly 2-stroke pipe using a HydraForce hydraulic blow out kit.
O-ring dimensions:
Original: Thickness=3mm; ID=40mm
Modified: Thickness=3.5mm; ID=39mm
2019 KTM 250 EXC TPI with RK TEK Head
2017 KTM 250 EXC with Keihin 38mm + STIC & RK TEK Head
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