1989 Yamaha Custom Street Tracker with Banshee Engine

Description

Additional photos are available here for your perusal.

With the 70’s era of flat-track racing as the backdrop for this build, builder and designer Joe Banks sought to introduce a fusion of vintage inspiration and modern engineering with this Kenny Roberts-inspired Street Tracker. The builder had become inspired by the builds of years past, but noticed a shortcoming – most similar builds could not compensate for the power-delivery issues of the transplant motors most people used. As a result, he sought to find a manageable but still unruly engine that could fit his needs.

The build started with a Co-Built chromoly steel frame mated to a nickel-plated swingarm, which is one of the few reasons why the entire build was able to achieve a dry weight just shy of 250 pounds. While the structure of the motorcycle was finished, the rowdy nature of the original flat-tracker could only be emulated with the motor from one vehicle – a Yamaha Banshee.

The engine itself was built to an eye-watering 421cc by the original builder, who states they received guidance and help from a Roger Arreola at Wicked ATV. Good for close to 80 horsepower and 50 ft.-lbs. of torque, the motor included Wicked ATV billet cool-heads, Wiseco pistons, and 4mm stroked Hotrods crank-welded to name a few additions to the heart of this street-faring modern classic. The builder had this to say when it came the question of why he built this custom: “if you can’t buy one build one.” He also documented the build in a thread on ADVRider.

This example is VIN: 1WT016605. The seller purchased this motorcycle from the original builder one and a half years ago.

The motorcycle does not have an odometer, the true mileage is unknown. The seller has put roughly 200 miles on this example.

Maintenance:
The seller reports that they have not performed any maintenance on this example.

Modifications:
The engine has been modified with the following:
421cc Serval Cub CPI barrels, stock porting, cleaned up castings, knife-edged and matched to cases.
Wicked ATV billet coolheads with 21cc domes.
Wiseco pistons.
4mm stroked Hotrods crank welded.
All new gearbox bearings, modified lock up clutch on stock springs-light pull.
YZ125 short kick start mod.
Chariot alloy water pump impellor, straight-cut gear.
UK made hi-capacity radiator.
50 degree Celsius thermostat.
Wicked ATV billet alloy gen cover.
Power dynamo light flywheel/generator.
Ignitech programmable ignition.
Banshee twin coils.
V Force 4 carbon reeds.
Wicked ATV CNC alloy manifold with crossover.

Alonze engineering stainless exhaust pipes and Co-Built 4130 chromoly steel frame.

5 axis machined triples in 7068 alloy, Cycplus gauge, bar-end mirrors, and Renthal AMA handlebars.

43mm R6 forks built with titanium nitride tubes and Hagon progressive springs, Tarozzi fork brace.

Bespoke Maxton twin shock absorbers set for bike.

Marvic magnesium wheels with ISR custom made front and rear brake rotors.

Beringer Classic series rear caliper and nickel-plated swingarm.

Scitsu tacho in Yamaha mount, Domino twin pull throttle, and Beringer Classic series front brake master cylinder.

Knight bodywork in heavy-duty glass Yamaha yellow gel with custom laser-cut graphics, including a Kenny Roberts’ signature decal.

Scar Racing titanium foot pegs.

Number 1 number plate.

Not pictured: De-lugged legs, 356 cast with new 6082 lugs welded with preheat and 4000 filler, all titanium fixings, nuts and bolts, titanium axles and swing arm pivot, and KTM steering stem/bearings.

The seller has included the original dyno sheet from 2019.

Inside of the tank:

It is riding on Kenda tires with date codes of 4318 and 0919.

Per the seller, the motorcycle utilizes an M-Lock transponder key system.

Extras
This sale also includes a spare set of shorty silencers, head gaskets, and cabling for programming of the ignition system.

Cosmetic Blemishes:
The seller states there are no cosmetic blemishes on this example.

Currently located in Knoxville, Tennessee, this Yamaha is offered on a clean Tennessee title. Have any Street Tracker stories or questions about this listing? Let us know in the “Comments” tab!