the rear sprocket teath are off set to keep the dirt and mud out of it and keep the chain from wiggling around.. just something I didn't know when I bought this kit.. pretty cool
Sunstar Chain & Works Z Sprocket Combo
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If you are sponsored by a chain and sprocket company that gives you these items, an aluminum sprocket is fine because you don't care about longevity. For the rest of us, this is the ultimate setup. The offset teeth keep the chain and rear sprocket clean from mud, dirt, and other debris while the MXR1 chain is as good as it gets. MotoSport sells this drive system cheaper than anyone else so look no farther. Make sure to order the master-link that matches your chain while you are at it.
This drive combo was the perfect setup, chain fit well, rear sprocket was 50% lighter than the stock sprocket on my YZ. The offset teeth kept sand and junk from accumulating. Front sprocket fit like a glove as well. Several riders with me are going to purchase this setup.Did not show any wear after 4 days on the sand.
A really good combo, and last longer that most we've tried, light weight durable.
Great sprockets they have held up really well and perform very well. I wish they had different colors, that's about all.