Factory-backed performance engine internals for dealers, engine builders, and custom projects worldwide.
Precision forged engine components engineered for extreme performance and reliability.
We deliver precision, performance, and partnership to dealers, engine builders, and motorsport professionals.
Any spec, any compression ratio, any bowl shape, any coating. 10-set minimum for customs. Vintage, rare, and non-standard projects — we prioritize what big brands turn away.
From daily-driven street builds to 2000+ hp competition engines. Drift, drag, circuit, street, track — one supplier for all power levels and disciplines.
No dealer forms, no ticket systems. You talk directly to the engineer designing your piston or rod. Concept → drawing in 3–7 days, production in 4 weeks.
Most brands sell pistons OR rods. We do both — matched from one engineering team, not two vendors. No cross-brand compatibility guesswork, optimized as a system.
Discontinued production, vintage classics, obscure imports. We develop for engines most brands have forgotten. Drawing or concept? We make it happen.
2618-T6 / 4032-T6 aerospace alloys, 4340/300M/Titanium rods, full CNC precision. Same quality as top brands — without the 30-year marketing premium.
Phosphate, moly skirt coating, DLC, ceramic thermal barrier, anodizing — all applied in-house. Consistent quality, faster turnaround, single-vendor accountability.
2-stroke & 4-stroke forged components from 400cc to 1000cc+. Lightweight, high-RPM proven, with small-batch custom options for rare and track-focused builds.
JA Modified forged engine components are used across a wide range of high performance and specialty engines.
Forged pistons and rods for street, drift, and drag — daily drivers to 2000hp+ race engines. Covers high-boost, high-compression, and high-RPM builds across all platforms.
2-stroke and 4-stroke performance forged components — from 400cc street bikes to 1000cc+ superbikes. Lightweight, high-RPM durable, with small-batch custom options.
Marine-grade forged pistons and rods for personal watercraft and racing boats. Corrosion-resistant materials and high-RPM designs built for the demanding marine environment.
Lightweight pistons optimized for high-RPM karting engines. Small-batch production for non-standard bore sizes and custom compression ratios.
Heavy-duty forged internals built for off-road racing and utility vehicles. Reinforced designs engineered to handle sustained high-load operation and extreme conditions.
Precision forged components for light aircraft and experimental aviation engines. Full material traceability, documented QC, and custom designs for airworthiness requirements.
Ultra-lightweight forged pistons for unmanned aerial vehicle engines. Custom port matching and compression tuning for extended flight endurance and reliability.
Any unusual project welcome. Vintage cars, discontinued engines, experimental builds, one-off prototypes. 10-set minimum, direct engineer consultation, concept to delivery.