Put facet by way of facet, the brand new Pivot Mach 4SL seems to be reasonably like the single introduced in 2019, however there’s so much that’s other…and higher.
It drops virtually a pound off the body, has two journey choices, every with two journey changes, with 95-103mm journey on International Cup builds, and 106-115mm journey at the others.
It provides extra garage choices, and it’s additionally somewhat longer and slacker. All in combination, it makes it a extra flexible race motorbike than ever, operating for the entirety from quick observe to XCO to marathon to multi-day epics.
“How a lot weight are we able to save?”
Pivot’s function was once to “Problem the brink” with this motorbike. Taken two techniques, it’s a motorcycle that permits you to push your personal limits, nevertheless it additionally driven their engineering workforce to design it.
Two primary targets had been “How a lot weight may we save out of this body?” and “How are we able to make the suspension extra playful with out giving up potency?”. In any case, it nonetheless must experience like a Pivot.
Founder Chris Cocalis stated that whilst different manufacturers had saving weight as a best precedence on the most recent motorcycles, Pivot’s center of attention was once on suspension efficiency. So whilst different motorcycles dropped journey to 90mm and even as little as 60mm, and/or moved to a pivot-free rear dropout house by way of the usage of a versatile seatstay, Pivot caught with their DW-link design and checked out techniques to refine it and the body to make stronger efficiency.
Their rear triangle, by way of the way in which, does no longer have a pivot close to the rear axle, however does use a decrease rocker arm connecting the one-piece rear triangle to the body, and the highest of the triangle pushes a rocker arm ahead, which pushes the vertically-positioned surprise downward.
Amusing truth, the prior Mach 4SL was once the primary in their trendy motorcycles to have a vertical surprise structure, which allowed for a decrease best tube and standover, decrease middle of gravity, and nonetheless permit for a water bottle throughout the entrance triangle. This new motorbike assists in keeping that design.
And, sure, shave a couple of grams.
In truth, quite a lot of. The brand new Mach 4SL is 300-417g (0.65-0.9lb) lighter than earlier than, relying on body dimension.
Linkages had been one house the place they stored so much. They’re cast 7000-series aluminum that’s then machined, making it so much leaner than earlier than.
They skipped any inside sleeves for cables and hoses, which is able to upload ~30g consistent with line, and so they prohibit the power to run the brakes moto taste. All all motorcycles send with Jagwire foam sleeves over the hoses inside of to stay issues quiet, and the cable port covers lock issues down to stop looseness and rattles.
They even decided on a paint that handiest provides about 25g, which is actually gentle for a complete coat of paint.
Claimed body weight for the Dimension Small is solely 1,660g (3.65lb) w/o surprise, and 1,930g (4.25lb) w/ Fox DPS surprise.
Entire motorbike weight is underneath 23lbs for the SRAM XX SL International Cup construct, dropper seatpost, 29×2.4 tires and 30mm large carbon rims.
Bettering suspension & journey choices
As nice as weight financial savings are, essentially the most fascinating function of the brand new Mach 4SL is how it adjustments its persona and journey.
Some contemporary motorcycles have shortened rear wheel journey to maximise potency. Pivot sought after to make it extra succesful, so shortening journey was once indubitably no longer some way to do this.
In order that they (most commonly) went longer. By way of swapping rear shocks, you’ll get 95-103mm of rear journey with a 40mm stroke surprise, or 106-115mm with a 45mm stroke surprise. Each shocks use the similar eye-to-eye period, so geometry doesn’t alternate when converting the surprise, nor when converting modes (the Forks do, even though, because the shorter stroke motorcycles get 100mm Fox 32 SC forks, the longer stroke ones get Fox 34 SC forks and can be slacker).
The prior style had a hard and fast 100mm rear journey, a brand new turn chip on the higher surprise mount means that you can transfer between two other journey settings for a given surprise. But it surely adjustments extra than simply journey, it utterly adjustments the motorbike’s persona.
With the surprise within the rearward place, it has extra journey and the rocker has extra leverage over it, making for a plusher, extra playful motorbike.
Transfer to the ahead place and there’s much less leverage, so it’s less assailable and extra environment friendly.
The transfer handiest strikes the higher surprise mount by way of 5.2mm, nevertheless it seems like an international of distinction. The motorbike is going from squishy and amusing to company and rapid (however nonetheless beautiful amusing).
As for the kinematics, the suspension has a emerging charge till the rocker hits 90º to the surprise, after which it’s a falling charge, which is helping it push throughout the remaining little bit of journey because the surprise ramps up. The combo offers them a relentless development, combating you from blowing throughout the journey however nonetheless letting you employ it all.
For the longer-travel builds, which Pivot anticipates being 97% in their gross sales, the precise (moderate all the way through the journey) numbers are:
- 106mm mode – 2.35:1 leverage ratio
- 115mm mode – 2.55:1 leverage ratio
The longer journey setup is designed in particular across the air spring curve of the brand new Glide rear surprise. In spite of the additional journey, Pivot says the longer journey model pedals even higher than the prior Mach 4SL, which was once already a actually just right, rapid motorbike.
For the shorter journey International Cup motorcycles, then again, the present Fox DPS surprise labored smartly however begs the query, why no longer spec the brand new Glide SL for the lightest motorcycles?
Cocalis says the DPS weighs about the similar because the Glide SL, there’s nonetheless numerous stock of the DPS whilst the Glide SL isn’t actually to be had but, and so they did all of the checking out with the DPS since this motorbike was once in building 2.5 years in the past.
So, the Glide SL will most probably sub in when they’ve executed all the tuning and checking out with it. But additionally, handiest about 3% in their gross sales would be the quick journey style, so…NBD?
Talking of tuning, they spec lighter surprise valving for XS/Small frames.
Finally, you received’t to find Reside Valve suspension on it, handiest handbook lockouts. Which, for a emblem like Pivot that’s been a large fan of Reside Valve since its inception, would possibly appear strange. However, let’s be actual, Reside Valve has been out for some time, and if patent filings are considered as studying the longer term, likelihood is that one thing new is coming quickly sufficient that it didn’t make sense to construct all the additional mounts and twine ports into this motorbike in the event that they’d be old-fashioned quickly.
Learn into that what you are going to, however Pivot added that hanging the ones holes and ports and mounts into the body didn’t have compatibility smartly with their stiffness and weight targets for this body both.
In addition they added that the they designed this motorbike to accomplish extraordinarily successfully underneath pedaling, minimizing the adaptation between the outdated motorcycles with Reside Valve and those motorcycles with out them. Talking of holes within the body…
Mach 4SL body design & options
Two issues that you just received’t to find listed here are stealth cable routing and threaded backside brackets.
For the cables and hoses, they do run internally, however you received’t to find Pivot working them thru a headset cap anytime quickly on their mountain motorcycles.
Why? “We really feel it actually complicates the angles of the cables, and so they aren’t optimized at the ones angles,” says Cocalis. “It’s additionally no longer optimal for the headset, and it creates access issues for water, and many others. We’re simply no longer there but.”
For the PF92 backside bracket, they do their very own machining and dealing with of the carbon shell to a miles upper usual than you’ll to find in maximum puts, which has resulted in them no longer having any problems with creaking.
And, for Race Face cranks, they use a custom-designed Enduro bearing with double-row bearings that makes it bombproof.
Bottles & garage
All frames have dimension particular layups and tube shapes and diameters. Mix that with the various surprise tuning and also you get motorcycles that are meant to really feel and carry out in a similar way for all rider sizes.
Long past are the 5 mounting issues at the downtube that allowed XL riders to suit two quick bottles there. Now, Medium and bigger frames can have compatibility two water bottles the usage of the accent mounts underneath the highest tube, however all sizes will have compatibility a big water bottle at the downtube. And there’s an additional mount underneath the downtube, too.
Why no longer inside garage? As it provides weight.
You’ll use the highest tube mounts for an additional bottle cage or device and wrap mounts, and there’s an extra flip-flop panel underneath the BB that can be utilized to mount some Topeak Ninja device kits (it’s the place the Di2 battery went at the prior fashions to energy the Reside Valve gadget).
Apparently, they pay reasonably somewhat of consideration to their cockpit portions, too. Their MTB flat handlebar is 35mm x 760mm, and is designed by way of them, with a layup in particular designed for compliance the place it counts, measuring to be as “relaxed” as another highly regarded handlebars available on the market. Which principally approach two issues: It’s no longer just a few generic carbon bar they slapped a label on, and it’s no longer one thing you’ll want to improve anytime quickly.
All motorcycles include a rear lockout the usage of the Rockshox TwistLoc faraway, and International Cup fashions upload some other line popping out of that to concurrently lock out the fork, too.
Chainline, gearing & brakes
The 4SL makes use of standard Spice up axle spacing as a result of they sought after to suit the narrowest Q-factor cranks from Shimano, even supposing they spec Race Face cranks on all the Shimano builds (as a result of they usually higher availability and value much less).
That allow them use 52mm chainline chainrings for the SRAM XX SL and Shimano+Race Face builds, which is best for an XC motorbike than the “do all of it” 55mm chainline that’s approaching numerous cranks at the moment, together with the brand new XO T-Sort cranks.
The chainstays transparent as much as a 38t chainring, and the motorcycles have compatibility 29×2.4 tires, with the caveat that they imply rounded-profiled 2.4 tires like a Rekon Race, no longer an aggressively knobbed DHR.
Brake mount is designed for a 160mm rotor, nevertheless it’ll have compatibility any 180mm rotor with an adapter except for Hope.
Pivot Mach 4SL Geometry
Succeed in and wheelbase are longer and the top attitude is slacker… 0.5º slacker with a 100mm fork, and nil.9º slacker with a 120mm fork.
While the prior style’s geometry was once designed across the 120mm fork, this one was once in reality designed across the shorter journey WC fashions first, even supposing they be expecting the ones shorter journey builds to be handiest about 3% of gross sales.
As soon as that was once dialed, they put the 120mm fork on it and made minor changes, shedding the BB and steepening the seat attitude somewhat extra in order that it hits the proper spot for each builds. Technically the BB top is set 0.4mm upper than earlier than, however all motorcycles now include 2.4″ tires relatively than 2.2″, which raises issues up. The brand new geo places the WC motorcycles in a quite extra competitive place than earlier than.
Pivot Mach 4SL pricing, builds & exact weights
All fashions are available gentle blue or inexperienced in sizes XS to XL, with Shimano and SRAM drivetrain alternatives at every spec stage. Key variations between the International Cup and different fashions is using the Switch SL dropper publish as opposed to usual Switch posts.
The Journey and Professional fashions include DT Swiss alloy wheels, all others get wider Reynolds Black Label carbon wheels with Trade 9 Hydra hubs, and Professional has the approach to improve to carbon. Click on any symbol to magnify.
International Cup XTR & International Cup XX SL
Crew XTR and Crew XX SL
Professional XT/XTR and Professional XO AXS
Journey SLX/XT and Journey GX/XO1
Motorcycles are to be had now. Keep tuned for first impressions and experience assessment.