The common mountain bike straight handlebar, the hybrid upright handlebar, and Trekking bar diameter are all 7/8" (22.2 mm.) This is not the diameter where the stem clamps , but the diameter of the rest of the handlebar, where one mounts the brakes and shifters. However, this is smaller than the current road handlebar diameter of 15/16" (23.8 mm.) See Sheldon's handlebar crib sheet
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Lizard Skin DSP Grips
30.3mm = 27g
http://lizardskins.com/dspgrips/
30.3mm: http://shop.lizardskins.com/collections/mtb/products/dsp-grips-30-3mm
Length: 130mm
Weight (with plugs and lock tape): 27g
Diameter: 30.3mm
32.3mm: http://shop.lizardskins.com/collections/mtb/products/dsp-grips-32-3mm
Length: 130mm
Weight (with plugs and lock tape): 30g
Diameter: 32.3mm
http://www.amazon.com/Lizard-Skins-DSP-Grip-32-3mm/dp/B00FXYHK9W
http://www.vitalmtb.com/product/guide/Grips,41/Lizard-Skins/DSP,14340#product-reviews/1751
http://www.competitivecyclist.com/lizard-skins-dsp-grip-32.3mm?ti=UExQIENhdDpHcmlwczoxOjE6Y2NDYXQxMDAxMDc&skid=LZS000B-OR-ONESIZ
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easton lock on grips: 30.3mm = 115gr; 32.3mm = 132gr (.29lbs)
http://www.chainreactioncycles.com/us/en/easton-lock-on-grips/rp-prod114386
http://www.eastoncycling.com/en-us/lock-on-grips-1217
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Race Face Half Nelson Lock-On Grip
http://www.raceface.com/components/grips/grips/half-nelson/
92.5 grams
http://www.amazon.com/Race-Face-Nelson-Locking-Grips/dp/B009F9XKOA
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Race Face Sniper Lock On
http://www.raceface.com/components/grips/grips/sniper-lock-on/
117 grams
128mm length
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Race Face Sniper Glide On
http://www.raceface.com/components/grips/grips/sniper-glide-on/
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http://www.rei.com/product/873070/ergon-gp1-bike-grips-
Large 210 grams
http://www.rei.com/product/810009/ergon-gp1-biokork-handlebar-grips
Large 189 grams