Alabama U.S.A.
Megacycle Camshafts, Hard Welded Rockers, Torsion Bar To Dual Valve Springs
With Titanium Retainers Conversion, And 5mm Black Diamond Valves.
Cylinder Head
Rebuilt To Factory
Stock Specifications.
Before
After!
Cylinder Head Rebuilt To Factory Specifications.
Racing Cylinder Head.
Before
After!
Before
After!
Racing Cylinder Head And Valves.
Cylinder Head Rebuild
DWMS Racing offers complete restoration, factory
stock, street performance, and racing cylinder head
building!

For restoration and stock rebuilding services we
offer a complete line of services including new valve
stem seal installations, valve guide replacement and
reaming, valve seat cutting, valve lapping, combustion
chamber cleaning, cylinder head painting, and many
other services!

Our performance and racing cylinder head services
also include custom camshaft installations, dual valve
spring and titanium retainer conversions, intake
manifold and gasket port matching, complete intake
and exhaust porting, racing valve guide installations
and reaming, valve seat work and cutting including
multiple angle valve jobs, combustion chamber cc
matching, reshaping, and polishing.

We cut three angle valve jobs on most all vintage and
modern motorcycle cylinder heads!   


Super Sport / Super Bike
Racing Cylinder Head
Racing Cylinder Head
Before
After!
This site and all contents are the respective property of DWMS Racing. All rights reserved. 2016
We Install Titanium Valve Spring Retainers
In All Of Our Racing Cylinder Head Builds!
DWMS Racing CB450 Ported Intake
On The Left Compared To A Factory
Stock Intake Port On The Right!
We Port Match The Intake Manifolds
On All Of The Racing Cylinder Heads
We Build Here At DWMS Racing!
"I came to Joe of DWMS Racing as an average street rider asking for
help on rebuilding the head and doing a valve spring conversion for my
CB450. Joe treated me with the utmost respect and professionalism
throughout the project and I could not be happier with his work.
His excellent attention to details shows!

Also I want to thank you Joe for the personal attention you gave me with
all my questions. DWMS Racing is the kind of company you wish all
companies would be, family owned and operated that is top notch
professional and personal.

Thank you much,
Ian"
CYLINDER HEAD BUILDING
Honda CB450 Racing Cylinder Head
Yamaha TW200
Honda SOHC CB750
2004 Suzuki GSXR 1000
Briggs & Stratton Flat Head
Suzuki SV650
Honda SOHC CB750
2005 Suzuki GSXR 1000
Racing Cylinder Head!
2001 Suzuki GSXR 750
WORLD CLASS ENGINE & MOTORCYCLE BUILDING
PHONE - 334-673-3747    EMAIL - joe@dwmsracing.com
We Port Match All Of The Intake And Exhaust Valve
Seats On Our Racing Cylinder Head Builds!
Honda SOHC CB550F Super Sport
Before
After!
Yamaha XS1100
Yamaha RD350 Cafe Racer Cylinder Heads
Before
After!
Honda CL450 Ported Cylinder Head
Yamaha XS650 XS1
Yamaha XS650 XS1 Cylinder Head
With Stainless Steel Valves
Yamaha XS650 XS2
Honda CB350F
Cylinder Head Rebuilt To Factory Stock Specifications
Kawasaki KZ440
Factory Stock Cylinder Head Rebuild
2005 Suzuki GSXR1000
Drag racing cylinder head with DWMS Racing ported intake
and exhaust ports, port matched intake manifolds, port matched
valve seats, bronze valve guides, titanium retainers, racing
valve springs, viton valve seals, and stainless steel valves!
2006 Kawasaki ZX14
Drag racing cylinder head with DWMS Racing ported intake
and exhaust ports, port matched intake manifolds, port matched
valve seats, bronze valve guides, titanium retainers, racing
valve springs, viton valve seals, and stainless steel valves!
Before
After!
1982 Honda CB900F
Cylinder head rebuilt to factory stock specifications
Before
After!
CB750 SOHC Racing Cylinder Head
DWMS Racing Ported cylinder head, port matched
intake manifolds, port matched intake and exhaust
seats, ported intake and exhaust ports, smoothed
combustion chambers, new two angle valve seat cuts,
competition valve job, lightened factory valves, new
valve seals, and new satin black ceramic paint.
2002 Suzuki Hayabusa Ported Drag Racing Cylinder Head
Before
After!
2014 Kawasaki ZX14 Racing Cylinder Head
Port matched intake manifolds, Port matched
intake and exhaust seats, True hand ported
intake and exhaust ports, Cleaned and smoothed
combustion chambers, Cylinder head gasket
surface decked .010
1982 Kawasaki KZ1000J Racing Cylinder Head
Clearanced for .415 lift camshafts, Port matched intake manifolds, True hand ported intake
and exhaust ports, Port matched valve seats, New viton valve seals, New dual racing valve
springs, 38.6 mm stainless steel intake valves with new three angle cuts on the intake seats,
and 32 mm stainless steel exhaust valves with new two angle cuts on the valve seats!

Before
After!
2003 Suzuki DRZ400E
DWMS Racing offers porting and competition valve
jobs on almost all atv and dirt bike cylinder heads! 
1974 Moto Guzzi Eldorado
Ported intake and exhaust ports, port matched
intake and exhaust seats, and polished valves!

Before
After!
Honda CB450 Racing Cylinder Head
CB450 racing cylinder head with stainless steel black diamond 39 mm intake valves 34 mm exhaust
valves, a torsion bar to dual racing valve spring conversion, bronze valve guides, titanium retainers,
port matched alloy intake manifold port extensions for 35 mm Keihin carburetors, ported intake and
exhaust ports, and port matched intake and exhaust valve seats with new two angle valve seat cuts!  

Honda TRX90 Flat Track Racing Cylinder Head
TRX90 Ported intake and exhaust ports, port matched intake
and exhaust seats, and a competition valve job!  
Before
After!
1970 Honda CB350 WERA / AHRMA Road Racing Cylinder Head!
CB350 twin cylinder road racing cylinder head with ported intake and exhaust ports, port matched intake
and exhaust seats, new valve seat cuts, and a competition valve job with a complete 5mm stainless steel
valve conversion including bronze valve guides, new black diamond valves, lash caps, keepers, titanium
retainers, dual valve springs, and new valve seals!  
GSXR1000 Drag Racing Cylinder Head Cut For +1mm Valves!
We can custom build your cylinder head to order and offer machining for +1mm
stainless steel valve conversions on most cylinder heads!
2006 HONDA CBR600RR PORTED RACING CYLINDER HEAD
Before
After!
VICTORY 103
Before
After!