Transtar carries Yukon Gear & Axle mini spools. Besides the price, the difference between a full spool and a mini spool is the strength. Although a mini spool drives exactly like a full spool, they are not as strong which means they do not support the ring gear. A mini spool replaces the spider gears and locks the left and right axle shafts together.
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Click here to purchase a Mini Spool.