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1978 YZ 400E / OW WORKS REPLICA

Built by: Don Mendenhall of Back in the Day MX

Machine work & Billet products by Back in the Day MX
The "LumberJack" would be proud!

ENGINE:

• Cases dipped / blasted & powder-wrinkle hard-coated
• crank bearing replaced / crank rod replaced
• crank trued & welded
• cases matched transmission shift shafts / shift drum & gears polished
• cylinder bored / ported & blasted
• head re - worked
• clutch basket / pressure plate & inner hub hard all cleaned & hard anodized
• pro - x clutch fibers & steels
• billet t-7075 boost bottle
• billet t-7075 intake reed spacer
• boyesen reeds

FRAME:

• frame dipped / blasted & powder-coated
• welds checked & re - done where needed
• brackets fabricated & welded to accept toque arm
• ( floater conversion )

WHEELS:

• billet extruded aluminum 7075 rims anodized gold
• heavy duty stainless steel spokes
• front & rear hubs machined flush / smooth
• rear hub machined modified for sprocket bolt mod
• hubs powder-coated gloss black
• billet gold anodized drilled light rear sprocket
• stainless hardware / allen bolts & lock nuts / washers applied to rear sprocket (machine mod)
• Dunlop 756 tires
• Michelin tubs
• koyo bearings front & rear
• billet t-7075 front & rear anodized red wheel spacers
• nos front & rear axles
• vesrah front & rear brake shoes
• powder-coated front & rear brakeplates
• drilled rear brake-plate arm
• front dual lead brake linkage / mod. heavy duty billet

FORKS:

• lower legs machined flush / all bracketry removed
• lower legs bead blasted & powder-coated clear
• Simons anti cavitater internals
• heavy duty fork springs
• billet t-7075 flush style fork caps anodized blue with "on the fly bleed system" anodized red push caps
• titanium nitride coated upper legs
• low profile fork gators
• billet t-7075 preload spacers

SHOCK:

• powder-coated shock body
• heavy duty powder-coated shock spring
• billet anodized t-7075 external preload spacers
• travel mod
• stainless 304 cad plated gold valve body
• re - valved shim stack
• internal billet t-7075 preload spacer
• heavy duty shock seal-head with bottoming bumper
• remote reservoir with separate compression damp. control knob
• stainless steel shock hose / double woven with high temperature & high pressure & aluminum anodized fittings
• heavy duty shock bumper

COCKPIT:

• billet t-7075 triple clamps (upper & lower)
• renthal handlebars
• nos stem
• magura clutch & brake perch & levers
• magura throttle assembly
• koyo bearings
• fmf grips
• team Yamaha crossbar pad
• billet plate brackets
• billet front plate cable keeper
• cable saver opaque front plate

PLASTICS & NUMBERS:

• dc opaque side-panels
• numbers & backings with logo by guts
• oem nos front & rear fender

CABLES:

• motion pro custom made by order / one off
• heavy duty type terminator 2: clutch / throttle / brakes cables

MISC:

NOTE: this bike has been modified to a floating brake system

• '79 YZ 400 seat pan & foam with low profile seat cover "custom made gripper style" with logo
• billet t-6061 polished chain guard
• billet t-6061 billet chain guide with delron chain buffer & stainless hardware
• '79 YZ 400 swing-arm dipped / bead blasted & powder-coated gold
• billet t-6061 polished torque arm
• stainless 304 1/4" brake rod with drilled heavy duty clevis
• billet t-7075 anodized red rear brake adjustment knob
• billet t-7075 anodized red brake rod adj #2
• billet t-6061 polished rear brake pedal
• team Yamaha pre cut perforated graphics
• nos oem front & rear fender
• billet t-7075 chain adjustment blocks
• uni air filter
• billet t-6061 anodized red & gold set pins
• onyx steel bead blasted & powder-coated clear two inch wide vintage style foot-pegs
• bead blasted & powder-coated clear to match OEM peg foot-peg brackets
• billet t-7075 anodized red seat bracket kit
• renthal gold series pro mx chain
• pbi counter shaft sprocket cad plated
• stainless steel clamps used everywhere applicable
• works cone type exhaust pipe
• aluminum shorty works type silencer
• billet aluminum anodized red front number-plate cable keeper
• billet aluminum front number-plate brackets

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