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  1. #1
    mtbr member
    Join Date
    Mar 2010

    GF Advance Disc vs. Specialized P1 AM vs Felt Q520

    Ive looked at all of these, and i like all three, but having been out of the whole cycle game since my teens i dont know what components are good anymore.

    Which of these three use the best components that are reliable and can take a beating?

    I have copied pasted the specs below, prepare for some reading.

    GF Specs:

    Frame Gold Series 6061 T6 aluminum, G2 Geometry, butted and hydroformed tubing, cold-forged dropouts & BB
    Front Shock SR SF10-XCT-V2 100, 100mm travel, custom G2 Geometry 46mm offset crown, mechanical lockout
    Shifters Shimano ST-EF50 8spd
    Front Derailleur Shimano FD-C050
    Rear Derailleur Shimano Alivio
    Cassette SRAM PG830 11-32 8spd
    Bottom Bracket VP-BC73 73x122mm Cartridge
    Wheels Alloy DC20, Shimano M475 hubs, Bontrager 550 rims 36h
    Tires Bontrager LT3 26x2.0
    Crank Set Shimano FC-M151 42/34/24
    Saddle Bontrager SSR
    Seatpost Bontrager SSR, micro adjust, 27.2
    Handlebar Bontrager Approved Riser, 30mm rise, 620mm width
    Grips Bontrager SSR
    Stem Bontrager Approved Alloy, 25d rise
    Pedals Wellgo LU-984, boron axle, toe clip adapter
    Headset 1-1/8" threadless, semi-integrated, semi-cartridge bearings
    Brakeset Promax TKB-320 mechanical disc, 160mm rotors

    Specialized P1 Specs:
    P. Series AM A1 Premium Aluminum, tig weld, fully-butted w/ double ORE DT, externally machined HT, forged dropouts w/ replaceable hanger, disc only
    SR Suntour SF10-XCM, 100mm (12" only = 80mm), 1pc. alloy lower, 30mm Hi-Ten stanchions, coil/mcu spring w/ preload adj., size-specific spring rates, spring seals, disc only
    1-1/8" threadless, loose ball
    3D forged alloy, 10 degree rise, 25.4mm clamp
    Alloy riser bar, 25.4mm, 38mm rise, 640mm wide, 8 degree back sweep, 8 degree up
    Specialized Enduro, dual compound Kraton, no flange, 131mm
    Avid BB5, mechanical disc, 160mm G2 Clean Sweep rotor
    Avid BB5, mechanical disc, 160mm G2 Clean Sweep rotor
    Alloy, linear pull
    Shimano Altus, 34.9mm clamp
    SRAM X-4, midcage
    SRAM X4-R 8sp trigger
    SRAM PG-820, 8-speed, 11-32t
    KMC X8 w/ reuseable Missing Link
    SR SunTour XCM fully replaceable, Octalink spline
    42S x 32S x 22S
    Shimano BB-ES25, Octalink spline, cartridge bearing, 68mm x 118mm
    Steel cage, composite body, 9/16"
    P.Disc AM, double wall disc, 32h
    Forged alloy, hi/low flange, double sealed, ground race, machined disc mount, 32h
    Forged alloy cassette, machined flanges and disc mount, double sealed, ground race, 32h, QR type
    2mm (14g) stainless
    Specialized The Captain Sport, 26 x 2.2", 60TPI, wire bead
    Specialized The Captain Sport, 26 x 2.2", 60TPI, wire bead
    Schraeder valve
    Specialized XC, Body Geometry, 143mm width, front and rear bumpers
    Alloy two bolt, 12.5mm offset, micro adjust, 30.9mm
    Alloy QR, nylon washer

    Felt Q520 Specs:

    Frame: Felt 6061 Butted Aluminum; Fully hydroformed top and down tube; oversized semi-integrated head tube, replaceable derailleur hanger, rack & fender mounts, Basta-Lock disc brake specific
    Fork: SR Suntour XCT-MLO With Lockout 100mm (13.5 80mm) Pre-load, Internal spring, Alloy Crown, Alloy lower with STKM Stanchions. With spring seal design, Disc Specific Lowers.
    Headset: Semi-Integrated 1-1/8 Aheadset--Steel Cups, Caged Bearing, with Alloy Laser Top Cap, Custom Curved 1 x 15mm + 2 x 5mm Straight Washers
    Stem: FELT One-Piece Melt-Forged Design, 1-1/8 Threadless Aluminum, 4-Bolt, 15 Degree Rise. CP Hardware BLAST BLACK Extensions: 13.5/15.5/17.5=90mm; 19.5/21.5=110mm
    Handlebar: Steel 30mm Rise, 6 degree Bend, with Felt Logos. Widths: 13.5-17.5=580mm; 19.5=600mm; 21.5=620mm
    Grips: Felt Dual-Density Extra-Soft & Sticky (Recipe #25)center with Hard Outer Durometer, 130mm Length, 30mm OD, Grey outer/Blk grip section
    Bar Ends: Rubber Plugs w/ Felt logo Bubble Decal, Included w/Grip
    Shifters: Shimano Altus ST-EF50 EZ-Fire Plus, 24 Speed
    Front Derailleur: Shimano FD-M310 Dual Pull
    Rear Derailleur: Shimano Alivio Top Normal RD-M410
    Crankset: Suntour XCM Crankset with Interchangeable rings 3 Piece crank Melt-Forged Aluminum Arms, 42T/32T/22T Black/Silver/Silver, includes Capless Axle Bolts, 50mm Chainline with 113mm Axle 13.5-15.5=170mm; 17.5-21.5=175mm With Chainguard
    Bottom Bracket: TH Cartridge Type, Cr-Mo Axle & Cup
    Pedals: MTB Design Steel Cage / PP Body
    Chain: KMC Z7 (8-Speed)
    Freewheel: SRAM PG-820, 8-Speed Cassette, 11-32T
    Brake Levers: Shimano, with Shifter, 4-Finger
    Brakes: Tektro IO, Stainless Rotors: 180mm Front; 160mm Rear
    Cables: Custom Felt Cable Set, Standard Black Casing, Featuring CP Stamped Logos & FELT Rubber 2-Tone Tube Tops at Head Tube and One Red CNC Alloy ferrule
    Saddle: Felt RXC Comfort, Low Side Profile Look with Wide/Flat/Plush Top, Double-Density Base, Satin Steel Rails
    Seat Post: Felt Alloy Micro-Adjust, 100% Black, 6061 Low-Profile Forged Head & Extruded Rall Clamps, 30.9mm x 350mm (CEN)
    Seat Post Clamp: Felt Bolt-Type with Logo, Cold Forged + CNC, 6061 Aluminum, with Steel Barrel Nut Design, 31.8mm
    Rims: WTB SX 24 Disc Doublewall, with Single Eyelets, 26 x 1.5 x 32H, 24mm Width, Presta Valve, Black Anodized, 460g
    Front Hub: Cold-Forged Aluminum Body, 32H, 6 Bolt disc compatible with Rubber Seals & Alloy Quick Release
    Rear Hub: Shimano FH-M475, 6-Bolt Type Rotor Mount, 9 Speed Cassette 32H, with Quick Release
    Spokes: Stainless 14G, Brass Nipples
    Tires: FELT THC XC Trail Highway City 26 x 2.1 30TPI Wire Bead, with Presta valve Inner Tubes

    Thanks in advance guys! (and girls)

  2. #2
    curious noob
    Reputation: drbroccoli's Avatar
    Join Date
    Feb 2010
    I got my 2009 p1 am off craigslist a month ago and I love it. The top tube is too high/seat post too long for me to feel that comfortable jumping on it, but the frame feels really solid. I already crushed the seat cage in a bad landing.

    My opinion, part by part: the bb5 brakes are really strong. A bit noisy though. The brake levers sucked though and I replaced them with avid speeddial 7s, which I love. The x4 shifts quickly and crisply. The stem is short and the bike feels really agile. The handlebars are already bent though, probably in an endo. The fork was pure awfulness. It ran dry within the month and I replaced it with a rockshox reba. It felt genuinely unsafe too, but now feels absolutely great. The seat was very comfortable, surprisingly.

    I hope that helps. I'd say it's a pretty good trail bike. The travel is a bit too short for much heavy trail riding, but as my first real mountain bike, I love it and expect to ride it for many years.
    Science works.

    "Beliefs are what divide people. Doubts unite them."-Sir Peter Ustinov

  3. #3
    mtbr member
    Join Date
    May 2010

    me too

    I was looking at basically the same bikes after being out of the loop for 10 years or so. I ended up getting the GF Advance Disc. Basically it's the minimum spec that I wouldn't be embarrassed to ride out of the driveway with and easily upgradeable with a nice frame. I am 5' 10" with a 29-1/2"
    inseam... I have a longer torso/arms and short legs. The GF geometry seems to be very comfortable for me but time will tell. This bike came with nylon pedals, weehoo. It also has the lamest POS cranks you can imagine. I plan to immediately purchase some LX cranks/ BB and aluminum DH pedals. Eventually I may go clipless but for now powergrips and platforms are my thing. The shifters also suck, but overall the price for the value is pretty good.

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