Atomic - Heavy Duty Timing Chain Kit – Ford Barra DOHC | Complete or Partial Kit
Whether you're refreshing a factory engine or building a 1500hp monster, the Atomic Heavy Duty Timing Chain Kit has everything you need to confidently replace the entire timing system on any Ford Barra DOHC 6-cylinder engine.
This is not just a chain and tensioner kit — it’s a fully engineered solution built for serious performance. Featuring a heavy-duty chain, a hardened billet curved guide, new billet hardened steel crank sprocket, genuine Ford tensioner, and all required guides, bolts, gaskets, and seals, this kit is trusted in both street and full race applications.
We’ve refined every component to survive extreme RPM, big cams, stiff valve springs, and heavy-duty use — with detailed installation instructions included below to make your timing system upgrade precise and stress-free.
NOTE: This kit is designed to accommodate head gasket thicknesses up to 1.2mm. Some setups with thick headgaskets may over tension the chain or not allow for proper tensioner operation.
✅ Key Features:
✅ Suits all Ford Barra DOHC 4.0L 6-cylinder engines (BA–FGX)
✅ Built for everything from stock rebuilds to 1500hp performance builds
✅ Includes Atomic Heavy Duty Timing Chain – ~2x strength vs factory
✅ Billet steel curved guide – heat treated, unbreakable, and tip reprofiled to prevent plastic failure
✅ Billet crank sprocket – case-hardened, heat treated, and tighter tolerance for reduced vibration
✅ Billet chromoly pivot bolt for added durability
✅ New top guide and straight guide
✅ Genuine Ford OEM hydraulic chain tensioner
✅ All necessary seals and gaskets included
✅ Full installation instructions included for DIY or pro use
🛠️ Why Choose the Atomic Timing Chain Kit?
✔️ Replaces every critical timing component in one complete package
✔️ Designed to prevent common Barra timing failures (chain stretch, guide breakage, sprocket wear)
✔️ Billet and heat-treated components ensure long-term reliability under power
✔️ Precision fitment and proven durability in street, dyno, and strip builds
✔️ The same billet guide design everyone else copied — we just perfected it
📦 What’s Included in a FULL kit:
- 1x Atomic Heavy Duty Timing Chain
- 1x OEM Ford Chain Tensioner with m6 bolts and washers
- 1x Billet Curved Guide with new plastic (heat treated & reprofiled tip)
- 1x Top Guide
- 1x Passenger side three bolt guide
- 1x Billet Case-Hardened Crank Sprocket
- 1x Billet Chromoly Pivot Bolt with nyloc nut
- Gaskets and Seals
