About
Modern Four-Stroke Dirt Bike Cylinder Head Specialists
Fastheads specializes in motorcycle cylinder head repair, remanufacturing, valve train work, and performance upgrades for today’s high-RPM motocross and off-road engines.
Precision Machining
Modern four-stroke heads require tight tolerances, proper seat work, correct valve train setup, and a clear understanding of high-RPM race engines.
Built From Real Experience
Fastheads was built by people who ride, wrench, race, and understand what happens when cylinder head work is done right, or done wrong.
Credibility
Why Riders Trust Fastheads
Modern motocross engines are compact, lightweight, and hard on valve train components. Fastheads focuses on the details that matter: proper machining, correct valve sealing, clean assembly, and parts matched to the engine’s intended use.
1
Cylinder Head Repair
Worn seats, damaged guides, valve train issues, and other common four-stroke head problems.
2
Remanufactured Heads
A practical option when your original head needs expert machining, inspection, and rebuild work.
3
New Cylinder Heads
Replacement head options for riders and builders who want a fresh start.
4
Performance Upgrades
Porting, valve train upgrades, and head modifications for riders looking for more power and better engine response.
What We Work On
Built For The Bikes Riders Actually Ride
Honda
CRF250R / CRF450R
Yamaha
YZ250F / YZ450F
Kawasaki
KX250F / KX450F
Suzuki
DRZ400S / RMZ250 / RMZ450