Echo 50cc Builds! Big Gains, Small saws!

3 full saw builds. Shindiawa 491,Echo 4910, Echo 501p all get full porting treatment. See if the 491 can hang with thr others once ported. Great 50cc porting candidates. Check out the website for products and info https://worksaws.com/ Visit s on Facebook   / hmwfllc   For the gearhead billet deflectors https://www.ghtuning.com/product/cnc-...