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Spider Gear

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When it comes to beefing the 10.50-inch Sterling, a very effective method is to replace the two-spider gear (left) with a three-spider gear. We used a GM three-spider for this illustration. Upgrading to a three-spider gear/case will increase the strength and longevity of the differential because it helps share the load when delivering power to the wheels. This helps reduce spider-gear failure.

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