Stock Suspension I went through this with my bike, but I'm much heavier weighing about 275 lbs with my gear. I rode my bike on the track with stock suspension and although it never felt unstable, I could never finish a (moderate to fast) turn... The bike would want to run wide; I figured it was me... In fact it was the rear shock spring was WAY too soft and as it compresses it affects the steering geometry - A LOT! Typical stock suspension is sprung fairly light and valved heavy to accommodate the wide range of riders. For the track - this is the worst of both worlds... My initial fix was to correct the spring rate, but I later decided to purchase a Penske double clicker and new compression/rebound valves with proper springs and top-out springs for the forks. My logic was since I was significantly heavier than the nominal 175 lb rider - I would run out of valving with stock internals. I think I spent about $1500 and did the forks myself. Best money I ever spent! Since you are coming in around 215 lbs, springs alone may do the trick for you. Rich