ALL BIKES FREE Ship 48US
Gravity FSX BOOST COMP EAGLE 29er Or 27PLUS,
SRAM EAGLE 1X12 Full Suspension Boost Spacing
ThruAxle Mountain Bikes with Up to FIVE INCH Travel
Select in 27.5x2.6 or 29x2.35 Tubeless Ready* Version
Click to see enlarged photo


With Advanced ThruAxle Lockout Forks and Powerful Shimano Hydralic Disc Brakes, Normally $350 Upgrade PLUS WTB TCS Tubeless Compatible wheelset worth $400+ (See tubeless info on FAQ page)

Above: StealthSuperDark 27PLUS 27.5x2.6	Also MatteBlack 29er x 2.35	Also Silver(Gloss) 29er x 2.35 Click For Large Pic

Click Links For>> Specs | Customer Reviews | Quick Sizing Guide | Geometry

SALE FAQ: Q: How is this price so low, near comparable dealer wholesale? It's hundreds to thousands below other brands similar spec bikes, What corners are being cut? A: No Corners have been cut on quality. BikesDirect has cut expenses by selling direct to you AND : 1) Minimal Advertising, 2) NO Sales Commissions, 3) No physical store overhead, 4) No inflated Corporate pay structures

Shipping NOW this 2025 Has INCREDIBLE Upgrades: (Differs from pic)
KS 582RL AIR Rear Shock w/Advanced Lockout
TUBELESS READY!* TUBELESS Ready TCS Wheels (Compare ~$500) PLUS
TopRated MAXXIS TUBELESS Ready Tires (Usually $120-150 Upcharge)
SHIMANO CENTER LOCK HUBS w/i25 Rims (Usually $110 Upcharge)
Reason/s for discount? This batch has a Plain Saddle and non Lock On grips
*See FAQ page for Tubeless system setup

Boost, Full Suspension, FIVE INCH TRAVEL, SRAM EAGLE 1X12 MTB

2025 Gravity
FSX BOOST COMP EAGLE
Select 29er Or 27+
~~MSRP $2599~~ SALE $999.95
Ships Signature Required

Choose 29er or 27x2.6"version
LONG Travel SInglePivot Kinesis Design
Advanced BOOST Hub Spacing
THRUAXLE LockOut Forks
Powerful Hydraulic Disc Brakes
Tapered HeadTubes

Save up to 60% Off List Prices
Buy Factory Direct from Bikesdirect
*not all tires fit, may require different rims/tires

Compare to $2000 Trek, Giant 29/27.5, (Fits Up to 27.5x3") Full Suspension Bikes

FSX BOOST Sizing Guide:
15" - fits most 5'6" to 5'8"
17" - fits most 5'8" to 5'11"
19" - fits most 6'0" to 6'2"
21" -fits most 6'3 to 6'5"

Use pull-down above to select size/color (May Show Sold Out Selections) Cart Doesn't Reserve Items. For Availability Make Selection, Then Go Thru Checkout. Don't See Size/s? Click> Get Restock Emails

We accept Visa/MC/Disc/Amex. PayPal is optional

Price Includes Ground Shipping
to 48 United States
(5 to 7 Day Delivery) (AK/PR/HI addtl charges)
(Email us for Delivery to PO Box/APO/FPO)

Financing Available In CheckOut

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Pay with US Issued Visa, MC, Disc, AMEX Cards. Paypal Is Optional

Assembly Information

Bikes come up to 90 percent assembled. Assembly is easy. An 11 year old customer assembled their own bike. View: His video HERE. How much Assembly? Click For: Sample Assembly instructions and videos CLICK for: Special price on the full Video DVD/CD and Folding Mini ToolKit If you don't feel confident working on your bike, we suggest you take it to a local bike shop for final assembly & safety checks.

We have sold thousands of Gravity Full Suspension Mountain Bikes. The Gravity Aluminum frames have some of the best quality and design for the money we have seen. Customers who own Gravity Bikes send friends and family to buy these excellent bikes all the time.

Here is what just a few Customers say about Gravity Bikes:

New Mexico. Joey V.
“…on a Mountain trail with a friend who is highly experienced with MTB and stayed toe to toe with them...took on some tough rocks and some tough bumps without any malfunctions. I Am falling in love with my bike and Im super happy with my buy...I give this bike a high score. Not only does it perform on the Mountain but it gets me to and from work....get one hell of a deal by buying this nice piece of equipment . Very pleased...”

Ethan
“..this bike is amazing...out lasted our "top of the line" brand name.”

Dee
“Overall, great bike....held up well through small jumps and steep DH.”

David
“Assembly was easy and straight forward...this Gravity FSX Mountain Bike is several steps above any bike I have purchased to this date. I have been to bike shops that sell top end mountain bike for several hundreds of dollars more that have big name brands on them that do not compare....a great bike for a great price and highly recommend it for the beginner to intermediate riders...a very satisfied customer.”

John H.
"... this bike is all me!I can fly down hill on this bike and stop on a dime, or veer hard with it…Going up hill, if you got the leg power and the lungs it'll do it....get a lot of compliments on the bike's sleek look too."

Tempe, AZ
"..a great bike so far. Looks dope, and rides good! Also, super quiet....Personally, I'd give it a 9/10."

Buy Your FSX now with shipping included to 48 states.

This FSX BOOST COMP EAGLE version Upgrades from FSX Boost Trail to:
SRAM EAGLE 1X12 Drivetrain, KS 582RL AIR rear shock + FREE StealthType Dropper Post. Choose TUBELESS READY* in Either 27.5x2.6 or 29x2.35 version

Unheard of Price for This Level Of Tech. Get Thru-Axle, Boost Full Suspension w/Lockout Forks. FITS Up To 27PLUS x THREE INCH SUPER WIDE TIRES!*
If you have ridden one you know why you want one. If you have ever wanted to try one, this is the best deal; spec for price anywhere on a 27PLUS capable Full Suspension bike with BOOST Hub Spacing. Extremely capable with Hydraulic Disc Brakes- rated by magazines as the best - Way better than v-brake systems and more powerful. *require different wheels/tires you supply

SWEET HANDLING TOP TECH, KINESIS ENGINEERED DESIGN
Co-designed by Kinesis and Gravity. Kinesis is one of the best frame designers and factory in the bike industry. Features an Advanced HydroFormed aluminum frame + Advanced Suspension Fork with FRONT LOCKOUT and THRUAXLES Front and Rear with Top Rated, trail-ready geometry.

Advanced Single Pivot Full Suspension Technology with LEAPP (Linear Extended Axle PivotPath):
Features the most advanced and durable single pivot design we've seen to date. Single Pivot designs tend to be Lighter and more durable, less maintenance than most competing multi-link designs. LEAPP = Linear Extended Axle Pivot Path, the downtube mount of the rear suspension is designed to extend the main pivot point further forwards which creates a more vertical rear axle path= smoother suspension action.

Trail Commanding Performance: SUPER SHORT Chainstays PLUS Slack Head Angles. Fully modern design with sleek internal cable routing and compatible with StealthType internal routed dropper seatposts.

What is Boost: Boost is a new dropout standard designed to widen the hubs on the previous standard MTB spacing wheels. The rear axle is wider by 6mm to 148mm and the front axle by 10mm to 110mm. Wider flanges = wider bracing angle for spokes = a stronger and stiffer wheel. Allows the use of 29er wheels with higher strength and stiffness for top performance. Also, More tire clearance, ability to use 27PLUS tires and with shorter chainstays for superior handling and climbing.
NOTE: This is a brand new factory direct model with the newest features and not yet on the Gravity USA site

27.5PLUS VS 29er
27Plus is lighter and more nimble than a normal fat bike and roll over obstacles better most any other tire size. Fits smaller riders than the 29ers too. The 27.5 PLUS / Mid Fat mountain bikes will have the best of all worlds. The agility of the 26" wheel and the big wheel experience of the 29er mountain bikes with the cushion, super grip and flotation of a fat bike. Larger and Heavier riders benefit from the extra air volume in the 27PLUS tires.

29er version accelerates and rolls faster but not as much flotation over soft surfaces as the 27PLUS.

COMPETITION READY
Specified with competition-ready components and has geometry based on careful research and trail-testing. Please compare this bike directly against any other manufacturers SRAM EAGLE 1X12 equipped $2100+ 27.5PLUS capable Full Suspension bikes on the market. Their bikes are likely heavier or not as well equipped or not 27PLUS capable or Not Boost spacing. They certainly will cost you hundreds more.

How Can We Sell At This Price?
We sell Factory Direct so you pay a price close to what a local dealer would pay at wholesale cost for a comparably equipped bike. Thus, you get a better equipped bike for hundreds less - often saving up to 60% off List prices. The only thing you have to do is a bit of tuning and assembly.

Get yours before they are all gone

WTB Says:"Say goodbye to air compressors, tire levers and pinch flats. Say hello to your full riding potential."
"...the solution for riders seeking high performance, lightweight and durable mountain bike wheel systems...
easy to install, fun to ride and simple to service..."*(addtional parts required and not included, See Tubeles FAQ page)"...
Read more about the incredible tech's features and benefits: >Click Here<


Features Advanced Tubeless Compatible Wheels worth $400+. Features incredible ride quality + virtually flat free performance (See FAQ page for Tubeless system setup)

FSX BOOST Sizing Guide:

15" - fits most 5'6" to 5'8"
17" - fits most 5'8" to 5'11"
19" - fits most 6'0" to 6'2"
21" -fits most 6'3 to 6'5"
(*approx. sizing - your final choice is up to personal preferences.)

Frame	Up to 5 Inch Travel, New Kinesis Engineered, 27.5 PLUSCapable Full Suspension Boost Design with LEAPP (LinearExtendedAxlePivotPath), Oversized, Custom HydroFormed TIG Welded 6061 Aluminum with Hydroformed tubes. Internal cable routing, SteathType Dropper post routing. Advanced Single Pivot Rear Triangle Swing Arm with replaceable rear derailleur hanger
Fork/Rear Shock	SUNTOUR SF19-XCM34-BOOST, TRAVEL 130mm, 29" BOOST, STEERER (1.5" to 1-1/8" tapered) CROWN:ALLOY, STANCHION: STKM CP FINISH , BLADE: ALLOY, 15mm-110MM THRU-AXLE, 160mm POST disc mount w/Lock Out / KS 582RL REAR SHOCK, AIR , EYE TO EYE:190mmX51mmw/LockOut (Yes, this 29Boost fork fits up to 27.5x2.8") Rear Suspension Travel is Up To 5 Inches
Crankset	SRAM SX EAGLE B148 POWERSPLINE 175mm 32T
Bottom Bracket	TRUVATIV POWER SPLINE 118 /68 CARTRIDGE
Pedals	Mountain Platform
Front Derailleur	n/a
Rear Derailleur	SRAM SX EAGLE ( 12S ) , Max tooth 50T
Shifters	SRAM SX EAGLE ( 12S )
Cassette	SRAM PG1210 EAGLE 11-50T
Chain	SRAM SX EAGLE 120LINK 12S GREY
Wheelset	RIMS WTB ST i25 TCS 2.0 29"/700c / 27.5"/650b, 32 hole, Disc, Black Anodized; PV drilled, Pinned Joint SPOKE 14Gx64PCS STAINLESS XD-BLACK W/14MM BRASS SILVER NIPPLE F/HUB SHIMANO Alloy Disc, 32H, Axle: 15x110mm, Anodized Black F/HUB ThruAXLE 15-110MM THRU-AXLE R/HUB SHIMANO 12S COMPATIBLE , ALLOY DISC ( 6 BOLTS ) ANO BLK. W/ 12MM THRU HOLE 14*32H.OLN:148MM. D:45.9 R/THRUAXLE ANO BLACK, FOR 12x148, L:M12xP1.5x178mm
Tires	MAXXIS FOREKASTER 29x2.35, 60TPI, Tubeless Ready, FOLDABLE, EXO OR MAXXIS REKON 27.5x2.6, 60TPI, Tubeless Ready FOLDABLE, EXO *See FAQ page for Tubeless system setup
Brakes	SHIMANO HYDRAULIC MT201 DISC BRAKE W/SHIMANO ROTOR 180MM
Brake Levers	SHIMANO HYDRAULIC MT201 for disc
Headset	VP-A71 BLACK W/M-1D ALLOY BLACK CAP
Handlebar	MTB (C:31.8mm), ALLOY 6061 RISE H/BAR ( 9° ) B/CENTER: 31.8mm.R/W:20/760mm SS.A.BK
Stem	Black Finish Aluminum threadless ( C:31.8mm ) ALLOY 6061 A-HEAD STEM. EXT:(6°) 60/70/80/90MM FOR 38 / 43 / 48 / 53CM
Tape/Grip	VP PP/TPR, D 22.2mm x OD 30mm x L 136mm , BLACK
Saddle	MTB COMP, PP Base, Satin Steel Rail, PU Leather Cover
Seat Post	KS E-TEN- I DROPPER (INTERNAL ROUTE) 31.6*385MM, TRAVEL:100MM,W/KGP REMOTE
Seat Post Clamp	Super Light Alloy with Quick Release
Sizes	As shown
Colors	see pull down menus
Our low price Saves You Hundreds! Compare to $2100 Trek, Jamis, Giant and Specialized 27.5PLUS Capable (MidFat) and 29er Mountain bike

FSX BOOST Geometry Chart (back to top of page: BackToTop)

ALL BIKES FREE Ship 48US Gravity FSX BOOST COMP EAGLE 29er Or 27PLUS, SRAM EAGLE 1X12 Full Suspension Boost Spacing ThruAxle Mountain Bikes with Up to FIVE INCH Travel Select in 27.5x2.6 or 29x2.35 Tubeless Ready* Version Click to see enlarged photo

ALL BIKES FREE Ship 48US
Gravity FSX BOOST COMP EAGLE 29er Or 27PLUS,
SRAM EAGLE 1X12 Full Suspension Boost Spacing
ThruAxle Mountain Bikes with Up to FIVE INCH Travel
Select in 27.5x2.6 or 29x2.35 Tubeless Ready* Version
Click to see enlarged photo