JDY Spec Diamond Forged Pistons - Audi RS3 8V / 8Y (2.5 TFSI DAZA / DNWA)

JDY Spec Diamond Forged Pistons - Audi RS3 8V / 8Y (2.5 TFSI DAZA / DNWA)
82.50mm Bore | 10.0:1 Compression | H13 Tool Steel Pin | Built for Unlimited Horsepower

Forged in the USA by Diamond Racing, these JDY Spec Pistons are engineered to withstand the punishment of high-boost, high-revving 2.5 TFSI builds. Designed in collaboration with JDY and built from race-proven 2618 aluminum alloy, these pistons are ready to handle serious horsepower with zero compromise on strength or reliability. From daily-driven street cars to fully-built track monsters, this piston set delivers unmatched performance for DAZA and DNWA engines.

Whether you're chasing 1,000+ WHP or pushing the limits of boost, JDY Spec Pistons provide the durability, precision, and technology to keep you in the powerband longer and safer.

🔧 Fitment
Audi RS3 8V FL (2018-2020) - DAZA Engine
Audi RS3 8Y (2021-Present) - DNWA Engine

🏁 Performance Specs

• Bore: 82.50mm

• Compression Ratio: 10.0:1

• Pin Diameter: 22mm H13 Tool Steel (Extra Wall Thickness - 5.72mm)

• Compression Height: 1.165

• Weight: 298g per piston

🔩 Product Features & Highlights
✅ Forged 2618 Alloy

• High-expansion, low-silicon aluminum for extreme HP and boost builds

• Proven in motorsport applications for durability under stress

✅ Advanced Engineering

• Round skirt with bottom reinforcing band

• Lateral gas ports for superior ring seal

• Offset wrist pins for reduced piston slap and quieter operation

• Premium Molly skirt coating for friction reduction and wear protection

✅ CNC & 3D Machined Details

• Under-crown milling for strength and reduced weight

• Oversized valve reliefs + clip cuts for large valve clearance

• Crown pre-machined and ready to install

• Window milling reduces weight without compromising integrity

✅ Premium Components Included

• Tool steel wrist pins (Part #: H8662250225C) - 8620 series, extra wall thick

• Total Seal piston rings included for optimal compression and longevity

🔧 Built By Diamond Racing USA
With over 50 years of piston manufacturing expertise, Diamond Racing’s commitment to performance and precision is unmatched. Every piston is made using the most advanced CNC technology, scanned and measured with state-of-the-art CMM and laser equipment for absolute accuracy. If you're looking for a piston that can take abuse and keep making power—this is it.

⚙️ What’s Included

• 5x JDY Spec Diamond Forged Pistons (82.50mm bore)

• 5x H13 Tool Steel Wrist Pins (22mm)

• Total Seal piston ring set

• Pin locks and support hardware

Engineered to win. Built to survive. Ready to boost.

📦 In stock and ready to ship. Turn up the power—these pistons can handle it.