Ford Windsor (SBF) Platinum TFS 240 Shaft Roller Rockers 1.7 Ratio

Trick Flow High Port 240 – Small Block Ford

The Yella Terra Platinum Shaft Roller Rocker System is purpose-built for Trick Flow High Port® 240 Cylinder Heads (TFS-5171T016-C02) on Small Block Ford engines. Designed for high-horsepower, large cubic-inch, and power-adder applications, these platinum rockers deliver ultimate valvetrain stability, precise motion, and uncompromising durability.

Engineered to complement the extreme airflow and raised runner design of the High Port 240 heads, the Platinum series excels in boosted, nitrous, and high-RPM naturally aspirated engines.

Key Features & Benefits

Purpose-Built for High Port® 240 Heads

• Designed around unique valve spacing, raised exhaust runners, and valve cover geometry of the Trick Flow TFS-5171T016-C02 cylinder heads.

Platinum Shaft System – Maximum Stability

• Rigid shaft-mounted design reduces deflection and improves valvetrain control at extreme RPM and cylinder pressures.
• Proven design that handles aggressive cams, heavy springs, boost, and nitrous without compromise.

CNC-Machined, Aircraft-Grade Construction

• Wide-body rocker arms extruded from aircraft-grade aluminium for maximum strength and heat dissipation.
• Intricately balanced, billet CNC-machined arms ensure valvetrain harmony at high lift and extreme RPM.

Heavy-Duty Hardware & Bearings

• 7/16”  hardware provide exceptional clamp load and durability.
• Oversized, full-complement caged bearings handle oscillating loads while reducing friction.
• Chrome-moly hardened roller tips protect valve tips and guides, maintain lash, and reduce maintenance.

 Optimised for High-Lift Applications

• Various ratios available, allowing additional lift without relying solely on the camshaft.
• Ideal for modern engine builders seeking to reduce lifter and pushrod inertia on aggressive ramp rates.

 Race-Proven Bolt-On Design

• Mounts both inlet and exhaust rockers to a common shaft, doubling footprint and clamp load without modifying the cylinder head.

 Applications

✔ Large cubic-inch Small Block Ford engines

✔ Boosted or supercharged combinations

✔ High-RPM naturally aspirated race engines

✔ Competition drag, circuit, and street/strip setups

Why Choose Yella Terra Platinum?

Yella Terra Platinum rockers are built for serious horsepower builders and racers who demand absolute valvetrain control. When paired with Trick Flow High Port® 240 heads, this system outperforms standard stud-mount or generic shaft rockers in stability, durability, and power delivery.

Tech Spec