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Product Description

Fat Bikes are no longer a Novelty. They have become a standard in the cycling industry and KTM Bike Industries offers two great models to get you rolling on 4.8” which will provide you with greater traction and comfort than a traditional off-road bike. Our Fat Rat model comes with the Rockshox Bluto which is a suspension fork specifically designed to handle the torsional loads of the wheels wide stance. Are you ready to get fat and tackle sand, snow, and dirt this season?


Frame: Fat-bike 26" Alloy Frame
Fork: RockShox Bluto RL 26" 80mm

Axle: RockShox MAXLE 15mm x 150mm
F/R Wheels: Hayes Mulefut 80 Wheelset 26"
F/R Tires: Schwalbe Jumbo Jim EVO 120-559 Snake Skin folding

Front Derailleur: Sram GX FD
Rear Derailleur: Sram GX RD 11
Shifters: Sram GX SL 2x11 Trigger
Bottom Bracket: Sram GX GXP-TM MTB100
Crankset: Sram GX FC 1000 FAT4 3624
Cassette: Sram CS PG 1130 11-42
Chain: Sram CN PC1130 

Pedal: VP-539 black
Brakes: Shimano Deore M615 
Handlebar: KTM Team HB-FB21L, flat 9°, 720
Stem: KTM Team KT-6 7°
Grip: KTM Team VLG--775-12D2 Diamond fin/2 Clamps
Headset: KTM Team B303AM drop/in-tapered, +10
Saddle: Selle Italia Q-Bik
Seatpost: KTM Team SP-619K 27.2/400

Weight: 14.3kg



Frame Size Seattube Length Top Tube Length Seat Angle Head Angle Headtube Length Chainstay Length Wheelbase Stack Reach
17" 430mm 574mm 73° 69° 125mm 450mm 1098mm 597mm 392mm
19" 480mm 594mm 73° 69° 137mm 450mm 1118mm 608mm 408mm
21" 510mm 614mm 73° 69° 149mm 450mm 1137mm 620mm 422mm

Sizing Guide


Product Reviews

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  1. High quality build with great components at an unbeatable price.

    Posted by Unknown on Jul 6th 2017

    This bike really handles everything you throw at it. Once the bike gets rolling it feels confident on all types of surfaces. The wheelset and tires are unbeatable and lightweight. Quality KTM proprietary parts all around makes this an all around amazing bike.

  2. Fat Rat in Alaska

    Posted by Rich Loftin on May 31st 2017

    The KTM Fat Rat is a well-built bike that feels good right out of the box, inspiring confidence immediately with its stability and ease of riding. Living in Alaska the fat-bike is a necessity for the terrain and environment we are blessed with here. The Fat Rat comes with quality components and I have had no issues with the bike riding in rain, snow, ice, and around Bears. The design is what you would expect from KTM, top notch. This is a great mid-price level bike and I would recommend it to anybody who was in the market to roll a fatty!!

  3. Best Bike for the Apocalypse

    Posted by Matthew Silvey on May 25th 2017

    I only have a few rides on the bike as of this review, but wow! Bike is lighter than I expected for such a big bike (21"). Can't wait to put it through it's paces off road. Love the lock-out on the Bluto front shock. Brakes and shifting are spot on. Well done!

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