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Performance Kits
YFZ450R "E+" Series Complete Ported Race Head - New OEM Head Included
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YFZ450R "E+" Series Complete Ported Race Head - New OEM Head Included
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On sale:
$1,975.00
Original price
$1,825.00
Questions about this item? Be the first to ask here.
Part Number:
513
Availability:
In Stock.
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Description
Our "E" series product line offers exceptional performance while keeping an eye on the wallet. This is absolutely a high-performance head with components hand-selected and vigorously tested to provide the best blend of performance and affordability.
We keep these heads in stock and can ship out the complete head assemblies immediately after order.
The "E+" head includes:
Brand new OEM Yamaha Cylinder Head
We weld the AIS hole shut before porting on the exhaust side
The same "big" porting as our top end race heads all done by CNC to guarantee every head is to proper specs.
Sand roll finish the ports after CNC porting to smooth out the machining marks for an ultra-smooth port
5 Angle High Performance CNC valve job to cut seats for oversize valves and optimal flow
Oversize stainless valves (much more economical over titanium and will provide exceptional valve life)
Heavy Duty performance valve springs specific to steel valves (reduces valve float and increases durability)
Titanium Valve Retainers
Precision Steel Lower Collars
New Valve Stem Seals
Xceldyne Valve Locks
This head comes complete and assembled as a direct replacement for your machine. If you are wanting similar work done on an existing head, we also offer those services and have other product listings available on this site. Buying this head complete saves time and potentially money. We keep these heads in stock and they will ship after order completion. If you are sending in an existing head for service, the lead time generally ranges from 4-6 weeks. We also find many "used" heads are worn out and need full replacement of guides and seats along with needing ground back flat and we often find cracks or damaged spark plug threads. If you feel your current head has a lot of hard hours, buying a new complete head will save time and money.
*This head can accept a max valve lift of 0.380" on the intake and exhaust cams. It is also important to utilize a piston that is cut to accept +1 valves or greater. If you need direction on cam selection, please contact us as we also offer a wide range of camshaft options.*
*Valve buckets not included. Reuse your valve buckets or buy new* Valves will need shimmed to camshafts
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