Museum of Mountain Bike Art & Technology

1988 Trimble Carbon Cross

The Trimble Carbon Cross frame was the first iteration of the Trimble design.  This original style frame lacked the extra bottom bracket reinforcement of the later Inverse 4 frames.  The lack of reinforcement led to a flexible bottom bracket and problematic front derailleur mounting.  There were relatively few frames made in this style and they often cracked making them even more rare.  UPDATE:  We have heard from Brent Trimble that there were 8 Carbon Cross frames produced.

This particular bike features the one-piece composite bar and stem combo which was designed by Brent's brother Roo.

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Frame		Composite
Fork		Cro-Moly
Rear Shock		NA
Rims		Mavic MA40 cut and rolled by Keith Bontrager
Hubs		Bullseye
Spokes		Stainless Steel, DT, double butted
Tires		IRC Piranha Pro
Pedals		Shimano Deore XT
Crank		Cook Brothers Racing, drilled rings
Chain		Shimano UG
Rear Cogs		Shimano 6 speed freewheel
Bottom Bracket		Cooks
Front Derailleur		Shimano Deore XT (modified)
Rear Derailleur		Shimano Deore XT
Shifters		Shimano Deore XT 6 speed thumb
Handlebars		Trimble carbon one piece bar/stem
Stem		Trimble carbon one piece bar/stem
Headset		Specialized Steel
Brake set		Shimano Deore XT, U brake rear, canti front
Brake levers		Shimano Deore XT 4  finger
Saddle		Selle Italia Turbo, perforated
Seat Post		Strong
Colors		Red
Size		23" c-t
Serial #		None