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Drivetrain› Automatic Transmissions and Components

SunCoast Performance

Billet Input Shaft

$745.00 $722.65 Save $22.35

SKU: 5R-BIS

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Overview

The SunCoast Performance 5R-BIS is a billet input shaft designed for E4OD, 4R100, and 5R110 transmissions.

Constructed from heat-treated 300M billet steel and precision-ground, this shaft features a 30/31 spline count and is rated to 2000 ft/lb of torque.
Show original supplier description
The SunCoast Performance 5R-BIS is a high-strength billet input shaft engineered to replace the factory component in Ford E4OD, 4R100, and 5R110 transmissions. Crafted from premium 300M billet steel, this shaft undergoes a rigorous heat-treatment and precision-grinding process to ensure exceptional durability and performance. With a robust torque rating of 2000 ft/lb and a 30/31 spline count, the 5R-BIS is specifically designed for demanding high-torque diesel and off-road applications. It provides significantly increased strength compared to stock input shafts, effectively resisting twisting and breakage, even under heavy loads and aggressive tuning. This upgrade is ideal for towing, performance builds, and enhancing long-term transmission reliability. Originally specified for 2003-2010 Ford F250/F350 models equipped with 6.0L and 6.4L Powerstroke engines, this billet input shaft is a critical component for those pushing their drivetrain's limits. It offers peace of mind by strengthening the transmission's backbone and preventing potential failures that can occur with modified or heavily utilized powertrains.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandSunCoast Performance
Part Number5R-BIS
CategoryDrivetrain
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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