After one year of riding under his belt, our 6 year old was complaining that his 120 was too slow. I used this kit to bypass the governor and after a trip down the yard and back, I could see the huge grin under his helmet shield. Governed, the sled has plenty of power out of the chute, but then it cuts out at around 7mph. With this bypass, it no longer cuts out and will get up to around 15mph on hard pack with stock gearing. The instructions were excellent. It took less than 5 minutes to install. Make sure you lube up the contact points with lubrication that doesn't get sticky at low temps.