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Engines and Components› Pistons and Piston Rings

Wossner

Forged Performance Piston Kit 8.3:1 Compression Ratio

$816.00 $736.11 Save $79.89

SKU: K9123DA

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Description

The Wossner K9123DA is a high-performance forged piston kit engineered for automotive sport compact vehicles. Built from durable 4032 (T6) alloy, these pistons are designed to withstand the demands of performance applications. This kit features a 77mm bore size and a stroke of 85.5mm, contributing to a displacement of 1591cc. With a compression ratio of 8.3:1 and a dome volume of -1.25, these pistons are optimized for boosted or high-compression engine builds. Wossner pistons are known for their unique PTFE coating on the skirts, which reduces friction and piston rock, leading to quieter operation and increased longevity. The 4032 alloy (T6) allows for tighter piston-to-wall clearance, further enhancing performance and reliability. This piston kit is specifically designed for the Mini Cooper 1.6L 16V models from 2002 to 2007, with engine code W11B16A (Supercharged). The kit includes the piston, rings, wrist pin, and retaining clips, providing a comprehensive solution for engine rebuilding or performance upgrades.

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

BrandWossner
Part NumberK9123DA
CategoryEngines and Components

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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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