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Jamis Nemesis 650B Bike 2012

Item #: BI224A03
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Untitled Document

Jamis Nemesis 650

Way back when Jamis introduced their very first Dakar 650B prototype nearly six years ago, something triggered them to experiment with the 650B wheel size in a hardtail. The Nemesis 650 is the race-ready aluminum execution of Jamis’s 650B promise. If you’re committed to hardtails and ready to jump on the 27.5” train, the Nemesis 650 is an attractive race steed.

The Jamis Nemesis 650 is constructed from from Kinesis 7005 triple-butted SuperPlastic Formed aluminum tubing, which presents a sturdy, yet lightweight ride. For the drivetrain, the Nemesis 650 employs SRAM components including X7 shifters and a rear derailleur, and a X5 front derailleur, which efficiently communicate with each other for smooth, snappy gear changes. The 2x10 gear set-up provides 20 gear ratios, optimized for cross-country training or racing. Avid Elixir 3 hydraulic disc brakes bring you to a quick stop, once you’ve decided to pack it in for the day. The X-Fusion Velvet RL 650B fork features 32mm stanchions and tapered alloy steerer tube to keep things stiff up front. Rebound and lockout adjusters allow you to dial your suspension to the current conditions of the days ride. The 100mm of travel provides the perfect amount of small-bump compliance without taking away from pedaling efficiency; a recipe for race-day. The Jamis XC saddle features a pressure relief channel to keep the blood flowing; while the Ritchey AM stem, handlebar, and seatpost produce a rigid cockpit for exceptional control and power transfer. The Nemesis’s proven geometry climbs like a mountain goat and delivers confidence on the descents. Pair the Nemesis 650’s race-bred frame with its clever build-group, and throw in the fast, yet agile 650B wheel size, with 100mm of travel on top, and you’ve got yourself the XC machine you’ve always wanted; fast, dexterous, versatile.

Jamis Nemesis 650 Features

  • Kinesis 7005 triple-butted SuperPlastic Formed (SPF) tubing
  • SRAM X7 rear & X5 front derailleurs, SRAM X7 10-speed trigger shifters with Matchmaker clamp
  • Avid Elixir 3 hydraulic disc brakes with 160mm HS1 rotors
  • Ritchey stem, handlebar, and seatpost

Frame Kinesis 7005 triplebutted SuperPlastic Formed (SPF) tubing, PressFit30 bottom bracket shell,1.5 - 1 1/8" tapered head tube, oversized seat tube, sloping top tube, crown-clearing down tube, over-sized stays, replaceable derailleur hanger
Fork X-Fusion Velvet RL 650B, 32mm stanchions, tapered alloy steerer, air spring, rebound & lockout adjusters, magnesium lower legs, 100mm travel
Headset FSA Orbit 1.5 Zero-Stack internal cup, for tapered head tube, 30mm shim stack
Wheelset Alex XD Lite 650B doublewall eyeletted 32H disc rims w/ Formula Hi-Lo flange sealed bearing 6-bolt disc hubs, 14g stainess steel spokes
Tires Kenda Nevegal, 650B x 2.1"
Brakes Avid Elixir 3 hydraulic disc brakes with 160mm HS1 rotors
Brake Levers Avid Elixir 3 hydraulic
Shifters SRAM X7 with Matchmaker clamp, 10-speed
Front Derailleur SRAM X5 34.9mm dual pull
Rear Derailleur SRAM X7 mid cage
Crankset SRAM S1000, PressFit 30, 39/26T
Bottom Bracket SRAM PressFit 30 integrated
Cassette SRAM PG-1030, 10-speed, 11-36
Chain SRAM PC-1031, 10 speed
Pedals N/A
Handlebar Ritchey Mountain Rizer bar, 31.8 x 20mm rise x 670mm
Stem Ritchey 4-bolt OS, 6˚ x 90mm (15"), 100mm (17"), 110mm (19"), 120mm (21")
Grips Velo Kraton, medium diameter
Saddle Jamis XC with pressure relief channel, cromo rails
Seatpost Ritchey 2-Bolt OS, 31.6 x 400mm with alloy clamp and cromo seatpin
Weight 27.00 lbs

Note: Components are subject to change without notice.

Size 15" 17" 19" 21"
Effective Top Tube Length 21.85in / 555mm 23.03in / 585mm 2362in / 600mm 24.02in / 610mm
Seat Tube Length 13.15in / 334mm 15.00in / 381mm 16.57in / 421mm 18.58in / 472mm
Standover Height 29.17in / 741mm 30.51in / 775mm 31.73in / 806mm 33.03in / 839mm
Head Tube Length 4.53in / 115mm 4.72in / 120mm 5.51in / 140mm 5.90in / 150mm
Head Tube Angle 71° 71° 71° 71°
Seat Tube Angle 73° 73° 73° 73°
Wheelbase 40.90in / 1039mm 42.08in / 1069mm 42.68in / 1084mm 43.11in / 1095mm
Chainstay Length 17.12in / 435mm 17.12in / 435mm 17.12in / 435mm 17.12in / 435mm
BB Height 12.12in / 308mm 12.12in / 308mm 12.12in / 308mm 12.12in / 308mm
Stem Length 90mm 100mm 110mm 120mm
Handlebar Width 670mm 670mm 670mm 670mm
Fork Rake 1.65in / 42mm 1.65in / 42mm 1.65in / 42mm 1.65in / 42mm
Seatpost Length 400mm 400mm 400mm 400mm


by PowerReviews
Jamis BicyclesJamis Nemesis Mountain Bike 2012

(based on 1 review)

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Reviewed by 1 customer

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(2 of 2 customers found this review helpful)


Great deal

By Nalyd106

from Jackson, TN

About Me Casual/ Recreational

Verified Buyer


  • Durable
  • Lightweight


    Best Uses

    • Mountain Biking

    Comments about Jamis Bicycles Jamis Nemesis Mountain Bike 2012:

    I make it out about 2-3 times per week on a single track and am a relative newbie. This bike is a huge upgrade from my 10 year old, entry level Trek that I've been pounding into submission the last few months. The components are top notch, bike light enough to maneuver easily (29 lbs with everything on it) through technical sections and front suspension so smooth I thought I had a flat tire at first. Great bike so far at a great price!

    • Cycling Style:
    • Speed Oriented

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