Road Legal XR750 Flat Tracker is the Real Deal

This Harley-Davidson XR750 is built with the utmost attention to detail to be as good on the track as it is on the street.

By Robert Bacon - May 1, 2019
Road Legal XR750 Flat Tracker is the Real Deal
Road Legal XR750 Flat Tracker is the Real Deal
Road Legal XR750 Flat Tracker is the Real Deal
Road Legal XR750 Flat Tracker is the Real Deal
Road Legal XR750 Flat Tracker is the Real Deal

Street Legal Flat Tracker

Since its debut in 1970, the Harley-Davidson XR750 has been a dream bike for many motorcyclists. It's just so beautiful. The biggest problem with the bike is, every time you see it on a track, you're left longing for a street-legal version. Now, thanks to Brad Peterson, there's an XR750 you can ride on the street legally. The best part is, it's not a lookalike or replica, this is the genuine article.

Photos courtesy of Bike Exif

Genuine Motor

Road-going replicas of race bikes are often let down by their engines. This is understandable when you consider how difficult it is to get your hands on a legitimate racing engine. For Peterson, however, nothing less than a factory motor would do. He sourced a genuine factory race motor which was used in 2007 by #80 Rich King. Considering it probably produces around 100 horsepower, you can be sure this bike pulls. According to Peterson, "The motors are sold without a title but they do have serial numbers. My motor was confirmed as a Rich King motor via the H-D race department records.". This engine is undoubtedly the jewel in the XR750's crown. 

>>Join the conversation about this XR750 Street Tracker right here in HDForums.com.

Just Getting Started

In terms of this bike's powerplant, you might think that using a genuine race motor was enough but, for Peterson, it was just the start. The engine is fed by twin Sudco Mikuni TM 38 flat slides which breath through Darcy racing intakes. The exhaust, SuperTrapp mufflers, and wet clutch were all supplied by Bill Werner Racing. So this is likely to be one of the best-sounding street-legal bikes you'll ever encounter. If this machine wasn't a rocket before these additions, it surely is now.

>>Join the conversation about this XR750 Street Tracker right here in HDForums.com.

Stopping Power

This XR750 goes like it's meant to be on a flat track. But on the road, there needs to be some more stopping power. So the first thing Peterson did was fit a front brake. For this, he used a Brembo master cylinder and caliper which clamps around a 320mm iron rotor supplied by Lyndall. It's a similar setup at the rear. There's another Brembo caliper hugging a 10.5-inch iron rotor which was also supplied by Lyndall, although the master cylinder is Grimeca. At the back, there's an A&A racing rear hanger with quick-change rotor and sprocket carriers. This is the perfect machine to take to the track and then ride home again.

>>Join the conversation about this XR750 Street Tracker right here in HDForums.com.

It Handles

This beast goes and stops like a racing machine, but does it handle? To get straight to the point: yes, it does. The drivetrain was stuffed into a C&J frame which has been oiled to prevent rust. Taking care of things up front are modified CBR600 forks with nitrided tubes which have been hooked up with A&A variable offset triple clamps. At the rear, there's a Penske shock so you know this bike handles well both on and off the track. The full carbon fiber bodywork along with Corbin seat is reputedly factory-issue. So as far as how it rides and feels, this bike is as close to the real deal as you'll get on the road.

>>Join the conversation about this XR750 Street Tracker right here in HDForums.com.

For help with your maintenance and repair projects, please visit our How-to section right here in the forum.

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