| year | size | head angle | seat angle | chainstay | bb height | tt length | wheelbase |
| 1990 | 15" | 70° | 73° | 16" | 21" | ||
| 1995 | 16" | 70° | 73° | 16.25" | 11.5" | 21" | |
| 1995 | 18" | 70.5° | 72° | 16.375" | 11.5" | 23" | |
| 1995 | 20" | 70.5° | 72° | 16.5" | 11.5" | 24" | |
| 1996 | 16" | 70° | 73° | 16.3" | 11.6" | 21" | |
| 1996 | 18" | 70.5° | 72° | 16.4" | 11.6" | 23" | |
| 1996 | 20" | 70.5° | 72° | 16.5" | 11.6" | 23" |
Introduced in 1990.
For all intensive purposes, in my mind, an XCR-EC with an ugly monocoque front end, but these frames have their devotees who will surely take offense at me putting it that way. Looking at it then, and still now, I see full suspension knocking at the door...
1st generation frames with Mantis stickers, main frame shaped by hand, unfiled welds. 1990-91?
2nd generation frames with stamped main frame with "Mantis" embossed into it (actually serves as additional stiffening!), filed welds. 1991-94?
1994 frames with seat collar painted to match (around heat-treatment batch 32)3rd generation (post-sale) frames produced by Control Tech, with standard chainstays in aluminum. 1995-97
MBA Oct 1990
| picture, serial # | description |
 VL18427 |
18" Long |
 VL183327 |
18" Long |
 VS18232 |
18" Short |
 VS18732 |
18" Short |
 VL180533 |
18" Long |
 VL180633 |
18" Long
1992 |
 VL180238 |
18" Long |
 VL180638 |
18" Long
1992 |