Jeffrey Kosmala (born September 16, 1961 from  Van Nuys, California) is a retired professional American "Old School" Bicycle Motocross (BMX) racer whose prime competitive years were (1978–1981).
 Note: Professional first are on the national level unless otherwise indicated.
 Started racing: 1973
 Sanctioning body: ()
 First race result:
 First win (local): First recorded win records reveal was in 14 & over Novice on September 19, 1975, at the Van Nuys Youth Center.
 First sponsor: Gus Dando's bikes
 First national win: In 15 Expert at the National Bicycle Association (NBA) Supernationals in Trabuco Canyon, California on April 3, 1977.
 Turned Professional: 14 yrs
 First Professional race result: 1st Beat David Clinton
 First Professional win:
 First Junior Men Pro* race result: Not Applicable
 First Junior Men Pro win: Not Applicable
 First Senior Men Pro** race result:
 First Senior Men Pro win:
 Retired: Effectively 1983 shortly after he left Redline Engineering.
 Height & weight at height of his career (1978–1981): Ht: 6'1" Wt: 188–210 lbs.
 Note: This listing only denotes the racer's primary sponsors. At any given time a racer could have numerous ever-changing cosponsors. Primary sponsorships can be verified by BMX press coverage and sponsor's advertisements at the time in question. When possible exact dates are used.
 Note: Listed are District, State/Provincial/Department, Regional, National, and International titles in italics. Depending on point totals of individual racers, winners of Grand Nationals do not necessarily win National titles. Only sanctioning bodies active during the racer's career are listed.
 National Bicycle Association (NBA)
 National Bicycle League (NBL)
 American Bicycle Association (ABA)
 *Note: At this time the ABA Cruiser title was a Pro/Am tile. Racers who were Professionals in the 20" class could race the amateurs in Cruiser class
and win the title, but only trophies, not cash rewards.
Fédération Internationale Amateur de Cyclisme (FIAC)*
 International Bicycle Motocross Federation (IBMXF)*
 Union Cycliste Internationale (UCI)*
 *See note in professional section
 National Bicycle Association (NBA)
 National Bicycle League (NBL)
 American Bicycle Association (ABA)
 United States Bicycle Motocross Association (USBA)
 International Bicycle Motocross Federation (IBMXF)*
 Fédération Internationale Amateur de Cyclisme (FIAC)*
 Union Cycliste Internationale (UCI)*
 *Note: Beginning in 1991 the IBMXF and FIAC had been holding joint World Championship events as a transitional phase in merging which began in earnest in 1993. Beginning with the 1996 season the IBMXF and FIAC completed the merger and both ceased to exist as independent entities being integrated into the UCI. Beginning with the 1997 World Championships held in Brighton, England the UCI would officially hold and sanction BMX World Championships and with it inherited all precedents, records, streaks, etc. from both the IBMXF and FIAC.
Pro Series Championships
 His pants motto* was "Just Be Kos/ nice try/ Kid Kos "
 A small image of what Mr. Kosmala looks like today.
 *Riders often put slogans on the seat of their pants instead of their surname as a small physiological ploy against their competitors behind them to read.
 Note: Only magazines that were in publication at the time of the racer's career(s) are listed unless specifically noted.
 Bicycle Motocross News:
 Minicycle/BMX Action & Super BMX:
 Bicycle Motocross Action & Go:
 BMX Plus!:
 Action Now:
 Total BMX:
 Bicycles and Dirt:
 NBA World, NBmx World (the official BMX publication of the NBA):
 Bicycles Today & BMX Today (the official BMX publication of the NBL):
 ABA Action, American BMXer, BMXer (the official BMX publication of the ABA under three different names):