Ride of the Month: Biro Racing Kawasaki Super Mini Racer

Our Ride of the Month for September probably has the toughest existence of any motorized vehicle we can imagine. It spends most of its operation at full throttle and is routinely sent hurtling over 90 foot jumps. It even has to endure the occasional crash. Despite its tough lot in life, this machine receives meticulous care and has been ridden to glory in national competition. Our feature this month is the Biro Racing Kawasaki 112cc Super Mini motocross racer. This unit is as close to a “works” machine as you will find in amateur racing.

Moose Jaw, Saskatchewan’s Biro Racing consists of riders Kyle and Jarret and parents Keith and Tracy. What separates Biro Racing from many other family motocross endeavors is the level of effort and commitment. When the boys’ inherent talent become apparent, Keith and Tracy made a pledge to give them every opportunity to be as successful as possible. Every minutiae of the racing effort, from training to equipment preparation is deliberate with the objective being nothing less than excellence. Kyle and Jarret have even traveled to Texas for the past few winters to train with a world-class coach in an effort to optimize their skills. All of this has paid off with innumerable provincial titles and strong results in national and US races.

For 2012, the boys achieved tremendous success at the Parts Canada TransCan event at Walton Ontario. This is the elite event in Canadian amateur motocross racing. Jarret finished 5th overall in the 65cc (ages 10-11) class and 8th overall in the 85cc (7-11) class. He finished 3rd in the first 85cc race, but some bad luck prevented a higher overall placing. Kyle finished 2nd in the 85cc (12-16) class and 3rd in the Super Mini class.

Kyle’s crowning achievement for this season was his qualification for the Super Mini 1 (12-16) class of the 2012 Loretta Lynn’s Amateur National at Hurricane Mills, Tennessee. This event actually takes place at the ranch of country music star Loretta Lynn and has been the preeminent amateur motocross event since 1982. Virtually every top pro over the past 3 decades has participated in this event during their amateur career. Hundreds of riders attempt to qualify for the National in regional qualifying events held throughout the US. Kyle finished a solid 10th overall at Loretta’s out of 41 finalists. In our opinion, this puts Kyle in “world class” territory for his age.

This Kawasaki Super Mini is a remarkable specimen. Every aspect that could be improved over stock has been either modified or changed altogether. This unit started life as a stock 2011 Kawasaki KX 100. As the maximum displacement for the “Super Mini” class is 112cc’s, the first order of business was to add a “big bore” cylinder to get the displacement to 109cc’s. Then a “stroker” crank kit was added to reach 112cc’s. But that was just the start. Keith left no stone unturned as he built what is as close to a “works” machine as you can get. Here is the list of mods:

• Ward MotorSports Engine porting, cylinder modifications and head work.
• Polished transmission gearing and gear case
• Hot Rod’s Stroker Crankshaft
• Wiseco racing piston and main bearings
• Wiseco Clutch
• Pro Circuit exhaust pipe with R304 Silencer
• 100 Octane race fuel
• Amsoil Dominator Synthetic 2-Cycle Racing Oil
• Amsoil 10W-40 Synthetic Motorcycle Oil (for transmission, changed every 5 hours)
• Fluidyne radiator
• Boyesen water pump
• V-Force 3 reed valve system
• Filtron air filter
• Factory Connection custom suspension with works KYB fork internals, Fox RC2 rear shock, PR2 linkage
• Pro Wheel hubs
• Excel Rims and brake rotors
• Renthal bars
• Sunline clutch and brake levers
• Sunline stainless steel arched foot pegs
• Works Connection holeshot device
• Tag aluminum front and rear sprockets
• Renthal R1 racing chain
• Dunlop Geomax MX51 front and rear tires
• One Industries decal and number kit

As a good Super Mini will generate around 30 horsepower and weighs only 140 pounds, the power to weight ratio is nothing short of astonishing. This bike would embarrass a good 4-stroke 250cc MX’er in a drag race to the first turn. This unit currently has 104 hours on it. Keith rebuilds the top end every 15 hours and does a full top and bottom-end overhaul every 30 hours. He keeps spare heads, cylinders and cranks on hand and cycles them through his maintenance schedule to eliminate downtime. He sends the suspension back to Factory Connection for a rebuild and re-valve every 40 hours. This attention to detail limits DNF’s and keeps Keith’s wallet from gaining too much weight. As you can imagine, this regimen has him spending many a late night in his garage.

Biro Racing would like to thank the following sponsors:

• Amsoil Inc.
• One Industries
• Factory Connection Suspension
• Matrix Concepts
• Dunlop Tires
• Pro-Wheel Racing Components
• Fox Racing
• Troy Lee Designs
• Rod Rich Consulting Ltd.
• Poulsen Farms
• Schrader Motors
• Ryno Power

Would you would like to submit an offering as our Ride of the Month? Just send us a photo and short blurb on any type of vehicle that you enjoy and that others may find interesting. Cars, trucks, motorcycles, boats, snowmobiles, etc. are applicable. Your full name and location will be omitted. Feel free contact us at “info-at-oildepot.ca”.