Join Date: Sep 2012
Location: Colorado Springs, Co
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Most modified sheaves will let you retain the top end. You can go further with a modified Cam Plate, like Coop45's Mod #2, and get more top end. Shims are the modification that reduces the top end, although not that much, depending on how much shim you put in.
2004 660, 25" BigHorns, 1.5mm shim, 2.85:1 ratio, orange spring, Garmin 60CSx, Pioneer fuel pack, STi HD6 rims
2013 700EPS- Coop45 Mod#3, .7mm shim, 3.1:1 ratio, Purple Spring, Roto-Pax, 25" Bighorns, ITP SS-112, Garmin Montana 600, Plano 1510 rear box