What is the compression ratio achieved with these pistons?

These Wiseco pistons are designed to achieve a 9.4:1 compression ratio when installed in an engine with a 94.0mm bore. This is a common choice for a balance of street performance and power.

Are these pistons suitable for a stock engine rebuild?

Yes, these forged pistons are a well-built option for rebuilding the S38B36 3.6L engine in your 1991-1993 BMW M5. Their forged construction offers greater durability than stock cast pistons, making them suitable for both stock and modified applications.

What does 'Build on Demand' mean for this product?

Build on Demand means these pistons are manufactured specifically for your order. This ensures you receive a fresh product, but it may also mean a longer lead time compared to in-stock items. Please check the estimated delivery time.

1991-1993 BMW M5 Forged Pistons | Wiseco

Name: Wiseco BMW S38B36 3.6L -24cc Dish 94.0mm Bore 9.4:1 CR Build on Demand
Brand: Wiseco
SKU: wiseco-wiseco-bmw-s38b36-3-6l-24cc-dish-94-0mm-bore-9-4-1-cr-build-on-demand-t14-4362635
Price: 1081.99 USD
Availability: BackOrder

Wiseco BMW S38B36 3.6L -24cc Dish 94.0mm Bore 9.4:1 CR Build on Demand

$1081.99

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1991-1993 BMW M5. Wiseco forged pistons for S38B36 3.6L engines, featuring a -24cc dish, 94.0mm bore, and 9.4:1 compression ratio.

Key Features

Fits 1991-1993 BMW M5.
Wiseco forged pistons for the S38B36 3.6L engine.
Features a -24cc dish volume.
Designed for a 94.0mm bore size.
Achieves a 9.4:1 compression ratio.
Forged construction offers improved strength and durability over cast pistons.

Secure CheckoutFast Shipping631-982-0042

Product Details

If you're rebuilding the engine in your 1991-1993 BMW M5, these Wiseco forged pistons are built for the S38B36 3.6L engine. They are designed to replace your original pistons and are a key component for anyone looking to refresh or enhance their engine's performance. Wiseco is known for making well-built internal engine components, and these pistons are no exception, offering a solid foundation for your build.

These pistons feature a -24cc dish, which helps achieve a 9.4:1 compression ratio when used with a 94.0mm bore. This specific compression ratio is often chosen for a balance between street drivability and improved performance, especially when paired with modifications. The forged construction means these pistons are stronger and more durable than cast pistons, making them a popular choice for engines that see harder use or are being built for increased power. Wiseco uses advanced forging techniques to ensure consistency and strength in every piston, which is crucial for the high-stress environment inside an engine cylinder.

This set is sold as a build-on-demand item, meaning it's manufactured to order. Please note that these pistons are not CARB approved and cannot be shipped to California. If you're undertaking a significant engine overhaul, consider pairing these pistons with quality connecting rods and a professional machine shop to ensure proper installation and optimal engine performance.