Drivetrain› Automatic Transmissions and Components

Sun Coast Converters

Suncoast Converters Super Drum Reinforced Input Drum Assembly w/ Overrun Piston - 700R4 / 4L60E Except LS1 Engine COA-92885

$393.02

SKU: S02K COA-92885

Out of Stock
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

This Coan Racing “Super Drum” input drum assembly is specifically engineered for 700‑R4 and 4L60E transmissions (excluding LS1 applications), combining reinforced strength with precise hydraulic control. Built from rugged, race-ready materials, the drum is structurally fortified to withstand the extreme loads of high-performance driving. It comes complete with an integrated overrun piston that supports smooth and reliable clutch operation during deceleration and shift transitions. Designed to address the common shortcomings of stock input drums, the COA‑92885 ensures improved durability, alignment, and consistency under track-day or towing stresses. Assembled with Coan Racing’s exacting standards in the USA, this unit is ideal for transmission builds where reliability, strength, and refined engagement are critical.
Show original supplier description
Suncoast Converters Super Drum Reinforced Input Drum Assembly w/ Overrun Piston - 700R4 / 4L60E Except LS1 Engine COA-92885

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

BrandSun Coast Converters
Part NumberS02K COA-92885
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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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