Does this look oddly acquainted? James Stewart will perpetually be remembered having this quantity and doing unimaginable issues whereas driving with it. As one other web page is turned within the historical past books of Supercross there are new faces, new numbers, and new groups shaped for the category of 2019. For the brand new season there can be a brand new rider representing the #7 on a Yamaha as rookie Aaron Plessinger strikes up within the premiere class in Supercross. Final yr we had the pleasure of testing Justin Barcia’s machine in Las Vegas in the course of the Supercross season. Whereas Aaron and Justin are each on Yamahas, their bikes are tailor-made to every of them particularly. Every manufacturing unit bike has its personal character options about it. We dove proper in with mechanic Billy Hartle on AP7’s Factory Yamaha YZ450F.
Beginning on the entrance of the motorbike, Aaron runs Renthal 996 Twin Wall handlebars. The usual OEM Yamaha YZ450F comes with adjustable triple clamps like those proven right here. Aaron runs his handlebars within the again place with the bar mounts dealing with ahead and simply barely rolled again. These triple clamps are the very same you’d discover on the showroom flooring of a 2019 mannequin.
The very first thing we considered once we noticed AP7’s very trick management arrange was old skool Batman and the thumb tacks that shoot out the again of the bat-mobile. Though there isn’t a thumb tack launch button, Aaron has loads of choices on this change for the bike. This all inclusive change is made by Mild Velocity . Begin button, map change and launch management can be found on this arrange. Each the number one and a couple of maps can be found to Aaron through the race. The Renthal grips are mounted to an aluminum throttle tube. The aluminum is stronger than plastic.
GET provides a field on the entrance fender with numbers and lightweight indicator to offer Aaron a simple approach to know if launch management is on in addition to his RPM vary. If he’s within the correct vary and the launch management mild is on, Aaron is certain to get a greater begin.
The apparent is that Aaron Plessinger runs a half waffle Renthal grip with grip donuts. Once you look a bit of nearer you will see that that Aaron retains his clutch lever pushed in fairly a bit. There are two causes behind this. First cause is the texture. Aaron likes the texture of the clutch when he pulls it in from this a part of the lever. Secondly, the workforce brings within the clutch lever away from the top of the handlebars to keep away from any injury or breaking off within the occasion of a crash.
The group makes their very own kill switches in home at Yamaha. This button has been beefed as much as stand up to the robust circumstances of Supercross, together with water that we’ve got already season through the season.
A YRRD Hydraulic clutch is added to Aaron’s YZ450F for a greater really feel and no fade throughout racing.
A inventory brake caliper and reservoir are used on AP’s race bike. All of the braking gear is provided to Yamaha from BRAKING. Whereas Plessinger runs a Renthal with cross bar, Justin Barcia doesn’t. The button lay out on each bikes are extraordinarily comparable however there are some minor variations the place they’re positioned.
The small plastic piece centered on the triple clamps is the antenna for all of the GET knowledge acquisition that’s ran all through the motorbike. You can too see how flush Aaron is operating his entrance forks to the triple clamps. This could possibly be used to assist with stability.
Kashima coated lowers and a GYTR line clamp finds its means on AP7’s bike. There’s a ton of GYTR provided trinkets on his 450 which might be obtainable to the general public for buy.
Met-tech provides an array of titanium fasteners to the workforce. Yamaha was not particular, however they do make a few of their very own fasteners in home and place them on the motorbike as nicely.
Factory KYB forks are mounted to the rookies’s race bike.
Mounted to the KYB forks is a knowledge sensor that runs from the highest to the underside. This lets the group understand how a lot journey his is definitely utilizing and provides them a chance to make modifications throughout race day to raised go well with the monitor/rider.
Mounted to the fork guards is a double button Professional Circuit holeshot system. Usually in Supercross they run the underside button which very deep within the fork.
Dunlop spec tires are mounted to DID Filth Star STX rims for added sturdiness. The spokes and spoke nipples are manufacturing unit OW items which might be positioned on the wheel for added power.
Some very trick KITE manufacturing unit hubs are added to the bike with an aesthetic AP7 insignia etched in. Inventory fork lugs are used with titanium axles each entrance and rear. Additionally a transparent shot to the OEM measurement BRAKING entrance rotor.
An in home carbon fiber disk guard is added to the bike to maintain AP’s entrance rotor and caliper out of harms method.
Inventory commonplace radiators are used with a mount that may run a fan if wanted for hotter races. The spickets and general radiator has been beefed up for Supercross to take successful throughout racing.
Carbon Fiber guards are added to the shrouds. These guards (made in home) serve a number of functions. Not solely do they shield the radiators, triple clamps, and electrical however additionally they forestall from water or particles being sucked in by means of the consumption. These have already completed their job as A1 was an entire mud race.
A 1.eight radiator cap is added to the bike for the excessive temperatures these bikes run at throughout racing. This helps with boil over.
The meat and potatoes. These engines are inbuilt home at Yamaha with the assistance of GYTR heads, ignition covers, and clutch elements. You additionally get a greater take a look at the in home constructed skid plate that protects the instances in addition to body of the motorbike. A GET eu is utilized by the workforce to learn knowledge on the bike together with water temperature, oil temp, and any info which may assist the group work out if there’s a drawback or room for enhancements to be made. Billy defined that the workforce is aware of A LOT of what’s going on with the bike.
On the brake pedal itself you will notice that Yamaha has re-routed the spring so the group can entry the clutch simpler and velocity up the method. It additionally helps forestall extra mud packing round that space.
Mounted to the inventory brake pedal is a brake snake. This retains particles and banners away from the engine. Groups have had issues the place one thing will get caught in between the brake pedal and engine inflicting the brakes to warmth up and utterly cease working. With the rear brakes engaged it makes it more durable on the engine to carry out throughout racing.
Whereas most of the groups run distinctive engine hangars on their bikes, Yamaha is utilizing the very same that you’d discover on a 2019 YZ450F at your native dealership.
The titanium foot pegs and mounts are made in home at Yamaha. The pins and comes on these are completely the epitome of manufacturing unit eye sweet.
The swing arm pivot is inventory with a plastic plug on the brake pedal aspect added to it. This prevents from mud packing in behind the pedal and within the pivot itself. On the other aspect you discover that the nut locking down the pivot is aluminum.
A manufacturing unit OW rear brake grasp cylinder is used. The location glass is eliminated to keep away from any problem with leaking or injury throughout racing.
The whole Professional Circuit exhaust system is tailor-made to Yamaha’s engine package deal. The Titanium exhaust system includes a blue carbon fiber exhaust tip and welded PC emblem on the header. Yamaha creates a base for the workforce and the riders can regulate them throughout testing. Aaron prefers extra backside on his bike however Billy did clarify that the facility curve they’re operating presently provides Aaron loads of energy all through the whole vary when he wants it.
Whereas in years previous the sub frames are adjusted by shortening them or altering place to keep away from the rear seat kicking them within the butt, the staff makes use of an OEM Yamaha subframe in 2019. The bike truly was lowered within the rear for 2019 on the inventory mannequin so the staff is happy with its inventory trim.
A inventory measurement Braking rotor, brake line and caliper are used out again. One other in home construct carbon safety piece is added to the bike to keep away from any injury.
A greater take a look at the Braking rear rotor. The pads on each the entrance and rear are shaved on the sides to permit Billy or any mechanic to get wheels on and off simpler.
Linkage are commonplace however the group does have choices to vary in the event that they need to.
You can see one other knowledge sensor subsequent to the KYB rear shock on Aaron Plessinger’s bike. Once more that is to maintain monitor of what’s going on with the rear shock always.
A 48 tooth Vortex sprocket is used with DID chain on Aaron’s bike. Additionally, you will discover the Kite hubs, polished swing arm, and oem rear axle that has been modified in home for the workforce to make use of. The axle blocks are additionally an in home merchandise. The staff can change the size of the bike by shifting the rear wheel in or out on the swing arm. Aaron runs his rear wheel in the direction of the again for stability. You additionally see within the photograph a Mild Velocity chain block.
Beneath the again fender you can see a plastic plug. That is for the group to plug in throughout preliminary begin up with a bounce pack to provide max energy so the battery is recent and absolutely powered when the bike takes off for racing. Velocity Cell offers the batteries to the groups.
Inventory seats are used and Aaron prefers to have them ridden in earlier than use. Inventory seat foam is used and Factory Effex supplies the ribbed seat cowl. An fascinating observe about Aaron’s bike in comparison with Barcias is the minimize out on the entrance by the fuel tank. Justin Barcia truly cuts away a big chunk of the entrance a part of the seat for the begins. This minimize out permits him to snag on one thing when hes leaned ahead and taking off out of the gate. Aaron doesn’t run that type seat.
An in depth up of the Dunlop spec rear tires that Aaron runs on his bike. Sometimes the rear tires will change for Factory riders whereas the entrance will keep the identical all through the course of a season.
An array of adjustment inluding excessive and low velocity compression are discovered on the Factory KYB rear shock.
Professional Circuit offers the shifter to Yamaha. This can be a longer shifter than inventory to suit Aaron’s bigger ft.
The chain rollers and chain slider is inventory.
A counter sprocket guard is made in home together with the housing for the hydraulic clutch system the workforce is operating.
An in depth take a look at the GYTR provided head in addition to O2 sensor provided to the workforce by Professional Circuit. That is one other knowledge acquisition element the group makes use of to gather info on the exhaust and engine.
A Twin Air air filter is used on Aaron’s bike. A netting can be utilized to cowl the filter particularly circumstances if want be. Factory Effex works with the group on weight and offers thinner materials particularly to them to assist that out. Within the gasoline tank is VP racing fuels.
All through the bike you will notice titanium and aluminum fasteners which assist with weight and power.