My wife riding a 2007 yamaha snowmobile on bumpy trails was bounced into some trees, she was going aprox.20 miles per hour, 20 miles from the start of our ride at 1.00pm on a clear day,riding with 10 other people. she was throwin froM sled when she hit several small trees. the rider behind her said she lost control after hitting two larger bumps on the traIL , we leave our sleds in the u.p. of mich and travel there most weekends. the next weekend i was repairing many smaller damaged items on the sled ,when i pushed down on the rear suspension it easally bottomed out, when checking the suspension i found a broken metal part that conects the two rear shocks together and to the frame.after talking to several dealers no one had this part because it was an updated part back in 2008 because of all the failures, this part should have been a saftey recall because riding a sled without rear shocks puts the sled on a spring only which is what through my wife out of control with cut to her back of head with large bump, shoulder chest pain,still cant kneel on knee. i called yamaha and at first they seemed concerned because of the injures, told me to take sled to dealer so they could take pictures and send them to yamaha. well its been 5 weeksand was told today by yamaha that they wont help me with any thing, the updated kit installed by dealer cost me 540.00 there are several other damaged items because of this accident that i have not repaired. is yamaha waiting till someone is killed before they are forced to do a saftey recall. my wife and i ride groomed trails only she is 55 years old 110 pounds and has driven snowmobiles for25 plus years. please help gary