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Table of Contents
Koski Overview
After building up many klunkers from his family's Sausalito bike shop and then helping Mert Lawwill launch the Pro-Cruiser, Erik Koski launched the Trailmaster on his own. Only 55 to perhaps 75 were produced over three years 1). Koski resurrected the brand in 1998 to co-produce a Titanium version with Steve Potts 2).
Erik Koski 1988 mombat
1980 Koski Trailmaster #2 SFO museum
One more pic
Not enough credit is given to Erik Koski in the history books. Joe Breeze used Koski forks for the first set of Breezers. The Cove Bike shop printed the very first mountain bike catalog in 1980. Koski mountain bike components were sold for decades.
This photo comes from China Camp State Park were I personally used to ride off road in the 1980's each weekend - never once seeing another bicycle - probably because all the action was next door at Mt. Tam…
2014 group ride in China Camp, Marin blackmtncycles
Production Notes
[1]. As Trailmaster #2 was 1980, 1980 is a good guess as the start date. See: SFO Museum
[2]. Less than 100 Trailmasters ever built. Fat Tire Flyer, page 117.
Or perhaps only 55? mtbr.com
[3]. End of production in 1982? Mombat Koski Catalog