The Best Mountain Bike Multi Tool with Chain Breaker - The Ultimate Trail Companion

August 9, 2019

4 minute read.

Crank Brothers have a solid reputation for mountain biking pedals, however, they also produce high-quality componentry including wheels, dropper posts, bars, and multi-tools! We are focusing on their line of multi-tools today and diving into what to carry on a ride to be prepared for any mechanical issues that may arise.

The line of multi-tools from Crank Bros is named M after multi, followed by the number of tools featured on the multitool. Today we will highlight the M5, M17, and M19. All three of these multi-tools have become the ultimate trailside companion for any riding from XC to Downhill. They are constructed of high tensile steel and made to take a beating and keep on wrenching. They feature side grips for a secure handhold with gloves on or if weather hits.

Crank Brothers M5 Bike Multi-Tool

Featuring a phillips head #2 screwdriver and hex wrenches # 3, 4, 5, and 6. This little guy packs a big punch as the ultimate trail companion. The hexes and screwdriver should cover most normal mechanical failures experienced on the trail. The M5 multi-tool can come in handy when you find a loose hex bolt or the derailleur needs a slight adjustment.

Hex Wrenches: #3, 4, 5, 6
Screwdriver: Phillips #2
Weight: 85g
Length: 89mm

Crank Brothers M5 Bike Multi-Tool Close Up

Shop the Crank Bro M5 Bike Multi-Tool

Crank Brothers M17 Bike Multi-Tool

The M17 boasts a lot more technical tools to have trailside than the M5, and can help when more catastrophic mechanical issues strike. Broken chains, loose spokes, and a wider range of sizes to tighten up your components give the M17 a lot of versatility when it comes to the problems it can remedy.

Chain Tool: 8/9/10/11/12 speed compatible
Hex Wrenches: 2, 2.5, 3, 4 ,5, 6, 8
Open Wrenches: 8mm & 10mm
Screwdrivers: Phillips #2 & Flat #2
Spoke Wrenches: #0, 1, 2, 3
Torx: T-25
Weight: 168g
Length: 89mm

Crank Brothers M17 Bike Multi-Tool Close Up

Shop the Crank Bros M17 Multi-Tool

Crank Brothers M19 Bike Multi-Tool

Similar to the M17 but featuring an additional screwdriver and torx wrench, the M19 is the ultimate multi tool from Crank Bros.

Chain Tool: 8/9/10/11/12 speed compatible
Hex Wrenches: 2, 2.5, 3, 4 ,5, 6, 8
Open Wrenches: 8mm & 10mm
Screwdrivers: Phillips #1, 2 & Flat #2
Spoke Wrenches: #0, 1, 2, 3
Torx: T-10 & T-25
Weight: 175g
Length: 89mm

Crank Brothers M19 Bike Multi-Tool Close Up

Shop the Crank Bros M19 Multi-Tool

GUP Kwiki Tire Sealant

Flat tires are no longer a headache with GÜP. The latex-based formula inflates your tire at the same time sealing punctures, all within seconds. This is the backcountry trail blazer's dream come true, and will fix all standard 1-2mm punctures and fill a 29" x 2.4" tire up to 29 PSI (pounds per square inch). The one time use canister can even build enough pressure to seat a tubeless tire back onto a rim and can be used with either presta or schrader valves. Next time you hit the trails don't forget a can of GÜP. They also sell a nifty holster that enables you to strap the bottle to your frame, seatpost, saddle rails etc.

GUP TIRE SEALANT BEST BIKE ACCESSORIES GUP Kwiki Tire Sealant Frame Mounting Holster

Shop Gup Kwiki Tire Sealant Here

Shop GUP The Hölster Here

Spare Inner Tube

There's nothing that can replace a good old fashioned spare inner tube. Whether you are riding with tubes or tubeless, a spare tube can be your last line of defence when major tire damage occurs. If riding with tubes, a spare tube is crucial in case the integrity of one of your inner tubes is compromised to the point where the tube will not hold air and is unusable. If riding tubeless a tire can suffer a puncture too large for the sealant to effectively reseal the hold, this is when a tube can be placed inside the tubeless tire in order to achieve pressure and ride out of the trail. When choosing an inner tube make sure to verify the correct tire diameter and width in order to achieve a best fit. Common tire diameters are 700c, 26", 27.5", and 29". Widths can range from as low as 19mm to up to 3"+ with the fat tire trend. Your bicycle tires will list the diameter followed by the width in this fashion; 29 x 2.5". This would indicate your tire is 29" in diameter and 2.5" wide. You would then look for an inner tube that was labeled as 29" in diameter and with a width range that has 2.5" within it. Finally inner tubes come in either presta or schrader valve's. Determine which valve type you need by checking the current wheel/tire setup on your bike. Schraders are the shorter, plastic valves and the presta are the longer, skinny metal valves.