Bert/Brinn Mastertorque Adjustable Starter

The PowerMaster Bert/Brinn Mastertorque Adjustable Starter delivers reliable engine cranking performance for high-performance transmissions and custom engine builds. Engineered specifically for Bert and Brinn transmission applications, this black starter features a 3.25:1 gear reduction ratio that optimizes cranking torque delivery while minimizing electrical demand on charging systems, making it the preferred choice for builders working with modified powerplants that demand precision startup characteristics.

The 3.25:1 gear reduction is the critical specification here—it means the starter motor spins the engine's crankshaft at a mechanical advantage that maximizes rotational force during cold starts and under high compression conditions. This ratio strikes the balance between cranking speed and torque output, preventing voltage sag that can compromise ignition timing and fuel injection on engines with aggressive cam timing or elevated compression ratios. The adjustable design allows installers to fine-tune mounting geometry to accommodate varying engine bay layouts and transmission bellhousing configurations common in street rods, drag racing platforms, and boutique engine builds.

This starter is purpose-built for enthusiasts who have invested in Bert or Brinn transmissions—transmissions already chosen for their strength and compatibility with modified engines. Weighing 10.95 lbs and measuring 7.4 × 5.5 × 12.5 inches, it fits tight engine compartments while delivering the cranking authority that high-performance builds require. Whether you're assembling a restomod, preparing a competition vehicle, or running a custom street engine, the Mastertorque's adjustable mounting and optimized gear ratio ensure dependable starts every time the ignition turns over.