Kelford Cams & Valvetrain Upgrades at JXL Performance

When building a forced induction engine for serious power, the cylinder head is where battles are won and lost. Manufactured in New Zealand, Kelford Cams is globally recognized for producing some of the most advanced camshafts and valvetrain components in the top tiers of motorsport. When pushing massive boost pressures through a built block, factory camshaft profiles and weak OEM valve springs become a severe restriction. Kelford provides the exact valve lift, duration, and mechanical valvetrain control required to flow massive amounts of air and safely push your engine to the redline.

Drop in Camshafts, Valve Springs and Stage Profiles

Standard factory valvetrains are designed purely for low end torque and strict mass market emissions. When you install a larger turbocharger, the engine desperately needs to breathe. Kelford offers highly engineered Stage 1 drop in camshafts that provide a substantial power increase and aggressive idle without requiring heavy cylinder head modifications.

For more serious engine builds, their Stage 2 and Stage 3 profiles drastically increase valve lift and duration, engineered specifically to maximize airflow on big turbo setups and heavily ported cylinder heads. However, aggressive cam profiles and high boost pressures easily overpower factory valve springs, leading to a catastrophic condition known as valve float where the valves fail to close fast enough. Kelford completely cures this with their matched uprated valve springs and titanium retainers, ensuring perfect valve seat control and preventing piston to valve contact at extreme RPMs.

Curing GR Yaris Valve Float and Pushing BMW Drag Limits

Kelford valvetrain hardware is considered an absolutely mandatory upgrade for some of the most capable modern performance engines. For Toyota GR Yaris owners, the factory G16E-GTS three cylinder engine notoriously suffers from heavy valve float when tuned aggressively. Installing Kelford drop in cams and matched valve springs completely negates this factory weak point, unlocking massive top end power without sacrificing the daily drivability of the car.

In the European drag racing scene, Kelford is the ultimate valvetrain solution for pushing modern BMW engines to the absolute limit. Engine builders taking the B58 and the twin turbo S58 beyond the 1000 horsepower mark rely entirely on Kelford Stage 2 and Stage 3 camshafts to maximize cylinder filling and achieve record breaking quarter mile times.

JXL Performance supplies genuine Kelford Cams and valvetrain components to engine builders worldwide. Please check individual product listings for accurate availability, as lead times can vary significantly for custom ground profiles, specific valve spring kits, or special order engine parts.

Want to learn more about valve lift, duration, and curing valve float? Read our comprehensive Kelford Cams Buyer's Guide on the JXL Hub. If you need a hand checking fitment, verifying spring pressures, or choosing the right cam profile for your engine build, just get in touch with our team and we’ll do our best to help.