1989 Street Tracker Sportster

The V-Twin industry is in racing mode and bikers are in a racing mood. From custom made motorcycles built in the spirit of the first wheel demons of the 1920’s and later to the current Factory Flat Track Machines, the highly competitive, adreline-fueled American Flat Track sport is attracting new fans every day. Building for display or for race is the new trend in shops all over the country.

The 1989 Sportster featured here is evidently much more than a custom dirt track themed motorcycle. Although its design would bring many gold trophies in many major bike show competitions, it was not the primary objective of its fabricator, Curtis Fisk, owner and operator of Maryland custom shop Full Circle V-Twin.

Most noticeable at first glance and making this Tracker quite unique is the overall setup with a single shock kit that has been developed specifically for the Harley Sportster frame. All the rest is superb fabrication, mixing beauty with functionality. A handmade aluminum gas tank, a one-off aggressive stainless 2-1 exhaust, and many body details preparing this Sportster for tough times fighting for a podium place. Maryland neighbor Zipper Performance was in charge of building the 1250cc Zippers/Full Circle V-Twin engine (more in a follow up article) and received full responsibility and freedom to prepare and fine-tune this machine before each dirt track Twins race. (tech sheet below). Full Circle V-Twin. 240-347-4663

“Factory 1989′ R” Street Tracker
1989 H-D Sportster
1250cc Zippers/Full Circle V-Twin built engine
Zippers lightened & balanced crank
Zippers CNC heads Stage III
NRHS pistons & cylinders
Red Shift 573 Cams
Lectron Carb
FCVT handmade stainless 2-1 exhaust
Zippers Dual Row Bearing Billet Trapdoor with Andrews 4 speed gears
Barnett Clutch
PBI offset sprockets
Full Circle Single Shock Tracker frame kit for H-D chassis
Penske Shock
GSXR inverted forks
Vortex Flat track bars
Full Circle handmade Alum. XR style gas tank
Storz XR style rear tail
Brembo Brakes
EBC brake rotors
Full Circle foot controls
Paint by Tuki, Bucky’s LTD
Final Assembly conducted by Curtis Fisk & Dan Goldman @ F.C.V.T. Hagerstown MD .

Zipper's

17 Responses to “1989 Street Tracker Sportster”


  1. 1 P. Hamilton Aug 14th, 2017 at 8:03 am

    Would like to race this one.

  2. 2 Amigo Aug 14th, 2017 at 8:04 am

    What about a kit for the current Sportster frame?

  3. 3 Brandon Aug 14th, 2017 at 8:06 am

    Like the exhaust design

  4. 4 Hacksaw Aug 14th, 2017 at 8:59 am

    NO! On a kit for the current frame. Rubbermounted engine and wider motor isn’t a great platform for a real racer. Plus the buy in for stock donar 4 speed evo XL is peanuts

  5. 5 NoH2Oh Aug 14th, 2017 at 10:37 am

    Amazing what a really nice pre 2003 XL goes for in the Chicago area. Under $3K for a LOW mile example all day long.
    Best buy in motorbikes IMO.

  6. 6 Mike Schmitz Aug 14th, 2017 at 11:54 am

    This bike looks kinda cobbled together. Kind of a “let’s see what’s layin’ around, and use it kinda thing. The spindly single shock looks like it’s not up to the challenge of the engines power. The seat way above the rear tire is so 600 cc Japanese. Ducati can get away with the look, but not HD. And the farkely gold chain? Come on…Just buy a Buell.

  7. 7 jim watson Aug 14th, 2017 at 12:11 pm

    Bitchen! Perfect picture location – at a Dirtrack – for a Dirtrack themed machine. The stance is on point.

  8. 8 Ted Ellis Aug 14th, 2017 at 2:01 pm

    Awesome design. Excellent execution of race inspired design. Suspension and performance parts obviously involving some insight and experience. This ain’t your daddy’s Harley! If you want a windshield and radio, just drive the car.

  9. 9 SYF Aug 14th, 2017 at 3:29 pm

    Mike Schmitz, a Buell is not even in the same ballpark as this dirt tracker.
    So the gold chain is farkely? lol
    This bike is as jim watson noted, on point.

  10. 10 Danammo Aug 14th, 2017 at 3:47 pm

    Mike,
    Just for your information, because based on your very ignorant response to this build. Penske made this shock based on the geometry, weight and HP output. This bike, would smoke anything you got in your garage on the track. If you look at any XR750 race bike, you will see a single shock Penske along with the tail section way above the rear tire. Get off your high horse and appreciate perfection. You don’t like it? Keep it to yourself. But that’s just because your wallet can’t keep up with your mouth.

  11. 11 Paul Jetson Aug 14th, 2017 at 3:48 pm

    Good find, Cyril.

  12. 12 Fuji Aug 14th, 2017 at 4:35 pm

    Nice looking. Looks more like a Flat Tracker than any we’ve ever seen.

  13. 13 Chris G Aug 14th, 2017 at 10:22 pm

    Pretty Cool Mr. Fisk

  14. 14 nicker Aug 14th, 2017 at 10:23 pm

    Put a plate on the back of it and put a smile on your face (if you can handle it)…. 🙂

    -nicker-

  15. 15 Dale Aug 15th, 2017 at 7:56 am

    Very nice tracker!!!

  16. 16 Xenu Aug 15th, 2017 at 10:57 am

    A fine build. I love farkely gold chains and functional rear suspension. Late model sportsters lack both.

  17. 17 SuicideGypsy Aug 18th, 2017 at 5:20 am

    Beautifully done!!!

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