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shimano xt m8100 vs m8120 주제에 대한 동영상 보기
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Shimano XT 12-Speed Cranksets – Reviews … – Vital MTB
Shimano Deore XT M8100/M8120/M8130 Crankset … So you’ve read every review of the new 12-speed Shimano groups and like me, XTR is too much …
Source: www.vitalmtb.com
Date Published: 7/27/2021
View: 4423
Shimano Deore XT BL-M8100 + BR-M8120 Enduro / Trail …
The Shimano Deore XT BR-M8120 Postmount brake caliper is with its 4-piston construction perfect for Trail and Enduro use. Compared to its predecessor a quicker …
Source: www.bike24.com
Date Published: 2/1/2022
View: 411
Set – SHIMANO Deore XT Disc Brake 4/2-Pistons BR-M8100 …
1x SHIMANO Deore XT disc brake 4-piston BL-M8100 + BR-M8120 for front wheel, pad with cooling fins 1x SHIMANO Deore XT disc brake 2-piston BL-M8100 + …
Source: r2-bike.com
Date Published: 12/4/2022
View: 9840
Shimano XT M8100 12-speed groupset, all you need to know.
Rear derailleurs weights: RD-M8100-SGS: 284g, RD-M8120-SGS: 290g. Shimano Deore XT 12-speed — M8100. The DEORE XT front derailleur comes in one …
Source: www.pushbikes.co.nz
Date Published: 1/10/2021
View: 8972
주제와 관련된 이미지 shimano xt m8100 vs m8120
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주제에 대한 기사 평가 shimano xt m8100 vs m8120
- Author: O Papo é Bike
- Views: 조회수 5,358회
- Likes: 좋아요 307개
- Date Published: 2020. 6. 19.
- Video Url link: https://www.youtube.com/watch?v=vL_G8ZvnTmU
Shimano XT 12-Speed Cranksets
So you’ve read every review of the new 12-speed Shimano groups and like me, XTR is too much for you. You’re left with 3 options : XT, SLX or (recently) Deore… depending of what’s left in stock during the pandemic. You need 165mm cranks ? Then XT or SLX are the only choices left for you. Still undecided between those two ? Read on.
I can’t explain why, but I’ve always been a fan of the SLX group. Maybe it’s because of SLX components’ excellent price/durability/performance ratio, or the often nicer looks over XT (in my opinion, in the past years). Once again, while choosing my new crankset, I was torn between the SLX and XT models. Weight-wise, both were technically within 10 grams of each other in the 165mm size (my arms+spindle+washers weights 538g). Both had 165mm arms without too much material hanging past the threaded pedal hole (often found on Race Face cranks). The SLX FC-M7120 checked every box, but I could not get over the bluish anodizing that wouldn’t have matched my new bike. It was around 50$ usd more for the XT simply for looks, but I can’t always be rational.
The XT FC-M8120 crankset for boost frames has a 55mm chainline, 178mm q-factor and uses the same 24mm steel spindle as the other Shimano cranksets. This is good news for people for have a press-fit bottom bracket, as the 24mm spindle lets you use a bottom bracket with bigger bearings than a 30mm spindle crank. That means more durability, more stiffness, and often, a stronger BB because of the added structural material in the cups. That might be reaching a bit too far, but I’ll take all the chances I can to have a creak-free bottom bracket interface. The 165mm crank arms and spindle with washers and preload adjustment cap weights 538g so this is a pretty lightweight aluminium crankset.
As with most (if not all) Shimano cranks, the 2-bolt and threaded cap makes installing the cranks a breeze. Just grease the spindle, slide it through the BB, grease the splines, slide the crank on, push the plastic spacer in the crank slot, tighten the threaded plastic cap until there is no play and tighten both crank bolts. So easy. The removal can also be done without a crank puller so this makes maintenance a breeze.
New chainring interface
The arrival of Shimano’s 12 speed groups came with a new direct-mount chainring “standard” that’s only used on their cranks. Shimano offers reasonably-priced Deore or SLX rings in 30 and 32 tooth options as well as 28 to 34 tooth versions of XT and XTR rings. Many companies now produce round and oval chainrings for the Shimano direct-mount standard like Wolf Tooth, One Up, NSB, Blackspire and others.
To install the direct-mount chainring, Shimano includes the necessary FC-TL41 tool in the box, but people who got their cranks on a complete bike might need to buy the 15$ish tool or ask a friend to borrow one. Oh, and a 32mm open-end wrench to tighten it to 35-50 Nm.
I went with my preferred 30t chainring size, but settled for the SLX CRM75 option. The XT rings were almost twice the price for a few less grams and an all-black finish. They share the same aluminium spider and steel teeth so I don’t know why they couldn’t produce a single chainring line shared between Deore/SLX/XT and save some money and sku numbers. Like Race Face, who have only one or two “quality” steps.
Something that I found weird is the chainline spacing on Shimano’s new lines : 52mm for standard, 55mm for boost, and 56,5mm for super boost. In my mind, 52-53mm would be better for chain alignment on the lowest gears, but I’ve read somewhere that if they went for a narrower chainline with 12 speed, the chain would end up rubbing on the smallest sprockets. My 11 speed XT setup last year used a 52mm chainline made possible by my old faithful Race Face Chester crankset, and the shifting was great with no rubbing. Maybe things are different with 12 speed. Anyway, I didn’t have any problems with this chainline and the cassette/chain durability seemed on par with my previous drivetrain setups.
The ride feel and flex vs. weight
With the many moving parts of a bike, it can be hard to pinpoint which part is stiff and which one is flexy when hammering on the pedals. Is it the frame, the cranks, the wheels? I can say that my wheels are properly tensioned and that my frame (Meta AM 29) is stiff, but I’m not so sure about those XT cranks. I’ve never felt them flex or be annoyed by an unusual deflection, so I guess that’s good, but at the same time, they didn’t feel as stiff as say my Race Face Chester cranks. Both using a steel 24mm spindle and a 30mm chainring. At 538g for the arms and spindle, the hollow-forged XT FC-M8120 is 217 grams lighter than the Chester, which weights 755g for the same parts and is made of forged 6066 aluminium. That might explain why it does not feel as sturdy, or it might just be because of the shape of the arms. It might also be just a feeling because of the visually more fragile appearance. Nevertheless, like I said, the XT did its job without feeling too flimsy, but if I was riding bike park laps all day I’d go for a Saint setup or something from Race Face of similar weight and price like the Aeffect R.
Durability
Since we can only ride 6-7 months of the year because of our snowy winters, I can’t seem to log much more than 500-600km per season. After one season, the crank doesn’t have any scratches, but I have covered it with a protective film. The crank arms come with a well-placed film to help with shoe rub, but from the reviews I’ve seen it was easy to scratch and gets removed by the shoes rubbing.
While I have installed many Shimano splined cranks in my life, they were never on my bike and this is the first spline-interfaced Shimano crankset I’ve bought. Being extremely meticulous with installation and maintenance, I am 100% confident that my arms were properly tightened to Shimano’s specs (which are written on a sticker besides the bolts). I take note of my torque wrench settings, and I have checked the crank bolts after every ride. Everything stayed tight but there is some wear visible on the crank arm splines like if I was pedaling too hard (which probably isn’t the case haha). I’ll keep a close look on this next season, but it surprised me quite a bit when I removed the cranks after the season. Since nothing ever moved, I was expecting perfect spline condition but use happens.
Conclusion
Maybe it is the effect of the relatively “delicate” look of the cranks, the lighter weight than what I’m used to, or the wear on the left arm’s splines, but it is the first time that I am let down by an XT-level component. I was expecting awesome durability and best-in-class stiffness, but against all odds, this time I can’t agree with all the reviews I’ve read of the XT groupset. Shimano says “Rigid and lightweight design for agressive trail riding” and in my mind this is exactly the type of riding that I do, but it seems like I would be better served with an even stiffer crank design. I’d be curious to ask enduro racers their thoughts as that’s what most of the Shimano-sponsored athletes are using. If I wouldn’t be annoyed by the bluish tint of the SLX crankset, I’d recommend those over the XT as they’re 2/3 of the price for most probably the same performance and durability.
SHIMANO Deore XT Disc Brake 4/2-Pistons BR-M8100/BR-M8120
SHIMANO Deore XT disc brake 2-piston BL-M8100 + BR-M8100 | set
Aggressive braking bundle not only for trail and enduro riders.
Probably the best and most versatile brake from Shimano is also becoming a pioneer in its class in the M8100 version. Due to the wide range of applications and the reliability, it is the first choice for many bikers.
Thanks to Servo Wave technology, the brake shines with quick response and a very easy to control pressure point. Bleeding is very easy using one-way bleeding, but is usually only necessary when shortening the brake line. The new arrangement of the clamp gives you some space on the handlebars, for example for remote levers. In addition, the rigidity could be significantly increased.
The ergonomically shaped levers are easy to operate with one or two fingers and can be adjusted within reach without tools. The Shimano shift levers with I-Spec EV mount can be attached to the brake levers to save the additional clamp for the levers.
The combination of 4 and 2-piston XT calipers is the solution to all braking problems. The 4-piston caliper is even more powerful at the front than its 2-piston counterpart at the rear, but can be dosed very precisely in combination with the BL-M8100 brake lever. The construction is designed for rapid heat dissipation. This can be further supported by using ICE-Tech brake pads with cooling fins. This means that longer descents in the high mountains are a safe bet.
The attachment is very easy thanks to the post mount and maintenance is not rocket science with the already mentioned one-way bleeding system.
Technical specifications:
Area of intended use : Cross Country, Marathon, Tour, All Mountain
Material caliper: aluminum
Material brake lever: aluminum
Material housing: aluminum
Material fastening screws: steel
Piston: 2
Brake Mount: Postmount
recommended brake disc: RT-MT800 (optional)
Brake medium: mineral oil
Brake line: plastic
Brake pads: 4-piston front brake G03A resin with cooling fins, 2-piston rear brake N03A resin without cooling fins
Design brake lever: 1-finger
Reach adjustment: yes, via adjustment wheel
Pressure point adjustment: no
Mounting: left (front) and right (rear)
Clamp: divided
Line length: 1000mm front and 1700mm rear
Color: Black
Weight according to the manufacturer: 586g
Weight weighed:
Scope of delivery:
1x SHIMANO Deore XT disc brake 4-piston BL-M8100 + BR-M8120 for front wheel, pad with cooling fins
1x SHIMANO Deore XT disc brake 2-piston BL-M8100 + BR-M8100 for rear wheel, pad without cooling fins
without brake disc
Shimano XT M8100 12-speed groupset, all you need to know.
New Shimano Deore XT groupset brings 12-speed features to mountain bikers
Original MTB performance groupset and best pound-for-pound groupset go 12-speed
Building on the experiences of the world’s best mountain bike racers, Shimano has brought its race-winning technology to competitive and enthusiastic mountain bike riders.
The new DEORE XT M8100 series, the latest iteration of the original MTB groupset, continues its legacy with high-performance features for today’s demanding and adventurous mountain bikers.
DEORE XT – durability and performance for today’s mountain bikers
The new DEORE XT M8100 series includes features such as Shimano’s groundbreaking 12-speed MICRO SPLINE cassette sprockets with either a 10-45T or 10-51T range, 1×12 or 2×12 HOLLOWTECH II cranksets, powerful 2-piston or 4-piston brakes, fully adjustable ISPEC-EV shifters, 12-speed precision-shifting front and rear derailleurs, rapidly cooling ICE TECHNOLOGIES FREEZA rotors and complete XC or Enduro wheelsets, all perfected for today’s mountain bikers.
Cranksets
The new DEORE XT 1X12 crankset features HOLLOWTECH II crank arms with an integrated bottom bracket axle and hollow crank arm. Chainrings come with a Dynamic Chain Engagement+ tooth profile, which, with its narrow/wide teeth, is key to the improved chain retention, smoothness and quietness of the drivetrain. For secure and fast mounting of the chainring the crank has a direct mount system to simplify how chain rings are changed. The crankset comes with 28T, 30T, 32T, 34T and 36T chainring options, interchangeable with XTR and SLX rings, has crank length options of 165mm, 170mm, 175mm and 180mm. DEORE XT cranksets are available for three chain lines:
52mm (FC-M8100-1) for Over Lock-Nut Dimensions (O.L.D.) of 142mm or 148mm, giving the narrowest 172mm Q-factor
55mm (FC-M8120-1) for an O.L.D. of 148mm for wider tyre and frame clearance (Q-factor 178mm)
56.5mm (FC-M8130-1) for an O.L.D. of 157mm and a wide Q-factor of 181mm
Crankset weights: FC-M8100-1: 620g, FC-M8120-1: 628g, FC-M8130-1: 636g (All 32T; 175mm, w/o BB)
The DEORE XT 2X12 HOLLOWTECH II 36-26T crankset offers the ultimate range when matched with the 10-45T cassette, maximizing the possibilities on all sorts of terrain whilst maintaining small gear steps for a consistent cadence.
Two 2x cranksets are available, both featuring a 2-bolt system for fixing the left side crank arm in place on the spindle. The FC-M8100-2 crankset has a 142mm O.L.D. for chain lines of 48.8mm and a Q-factor of 172mm. The FC-M8120-B2 crankset has a 148mm O.L.D. for chain lines of 51.8mm and a Q-factor of 178mm.
Weight for the FC-M8120-B2 (36-26T, 175mm, w/o BB) is 672g and for the FC-M8100-2 36-26T, 175mm, w/o BB) is 654g.
Cassette
DEORE XT 12-speed cassettes come with the MICRO SPLINE fitting system and are available in a 10-45T option for small gear steps or a 10-51T option for maximum range. Both cassettes also feature HYPERGLIDE+, allowing for quick up and downshifts and an extremely quiet drivetrain. The cassettes have an aluminum spider to house ten steel sprockets and two aluminum sprockets for optimum durability and weight. The CS-M8100-12 10-51T cassette weighs 470g and the 10-45T option weighs 461g.
Chain
The new DEORE XT 12-speed HG chain has been redesigned with an extended inner plate to improve chain engagement and retention and comes with chromized roller link plates for enhanced durability and smoother and faster shifting both up and down the cassette. The CN-M8100 chain (113 links + Quick Link) weighs 252g.
Derailleurs
Coming in either single (RD-M8100-SGS) or double (RD-M8120-SGS) chainring variants, the DEORE XT rear derailleur enables precise and quick shifting over a huge gear range. Both derailleurs feature SHIMANO SHADOW RD+ positioning, bump stoppers and 13T pulley wheels to make rides quieter and more enjoyable. Rear derailleurs weights: RD-M8100-SGS: 284g, RD-M8120-SGS: 290g.
The DEORE XT front derailleur comes in one specification for both 48.8mm & 51.8mm chain lines but is available for D-type, E-type or M-type mountings. Front derailleur weights: FD-M8100-D: 135g, FD-M8100-E: 106g, FD-M8100-M: 114g.
Shifters
With side adjustment and rotational adjustment options the ISPEC-EV shifters, which bolt neatly to the brake lever, offer solutions for tailoring the riding feel. Rubber padding on the paddles and a two-way release enhances shifting even further. The right hand shifter (SL-M8100-IR) uses a multi-release feature to quickly dump cassette gears and, for riders using a 2×12 set-up, a MONO lever on the left (SL-M8100-IL) shifts the front derailleur both up and down with precision. DEORE XT M8100 shifters are also available in a clamp band version. Shifter weights: SL-M8100-IR: 120g, SL-M8100-IL: 73g, SL-M8100-R: 117g, SL-M8100-L: 78g.
Brakes
DEORE XT brakes calipers are available in an XC-specific 2-piston version or a Trail/Enduro 4-piston version. The 2-piston version shares the same design as the previous XT M8000 version, which means the previous G02A/3A/J02A/3A resin brake pads or G04S/J04C metal pads are compatible, whereas the 4-piston version is a new completely new construction drawn from the XTR M9100 design, sharing the same N03A (resin) or N04C (metal) finned pads (compatible also with D03S or D02S pads).
The DEORE XT brake levers work with both the XC and Trail/Enduro calipers and come equipped with Shimano’s SERVO WAVE system for quicker engagement, improved power and a shorter free stroke. The brake levers are now angled in two positions against the handlebar for a stiffer brake sensation. The levers also feature a reach adjust dial and a free stroke adjustment screw for simple brake tune-ups on the trail.
XC style brake kits (BR-M8100-BL-M8100) with rotors (160 mm RT-MT800) and brake pads weigh 392g and Enduro style brake kits (BR-M8120-BL-M8100) weigh 410g including rotors and pads.
Rotors
The redesigned DEORE XT-level ICE TECHNOLOGIES FREEZA rotors (RT-MT800) are designed to maximize cooling, resulting in consistent brake performance and longer lasting brake pads. A sandwiched aluminum core, fused in a durable steel outer layer, dissipates heat via the heat fins in the center. Sizes available are 140mm (88g), 160mm (109g), 180mm (132g) and 203mm (164g).
Wheels
Unlike the XTR M9100 series, the Shimano DEORE XT M8100 series offers complete 27.5 and 29” wheels for XC and Trail/Enduro riding. Shimano XC wheels offer a 24mm wide tubeless ready, fully closed rim bed for tyres up to 2.35”. The 28 double-butted straight-pull spokes offer a perfect mix of stiffness and weight (WH-M8100-27.5: 1764g, WH-M8100-29: 1840g) for fast XC riding.
On the other hand, DEORE XT Trail/Enduro-specific wheelsets offer a 30mm internal rim width made for tyres up to 2.6”. Rear hubs come with zero-dish (O.L.D. 148mm) and the aluminum rims take 28 J-bend spokes to keep these tubeless wheels strong yet light for aggressive riders and riding conditions (WH-M8120-27.5: 1846g, WH-M8120-29: 1932g).
Both the XC and Trail/Enduro rear wheels feature E-THRU axles (15mm front, 12mm rear), 148mm O.L.D. widths and come with Shimano’s MICRO SPLINE cassette interface on the rear hubs.
Individual DEORE XT front hubs and FREEHUBs are also available in widths of 100mm and 142mm, 110mm and 148mm, and 157mm. Hub weights: HB-M8110: 142g, HB-M8110-B: 147g, HB-M8110-BS: 158g, FH-M8110: 305g, FH-M8110-B: 307g, FH-M8110-BS: 306g, FH-M8130-B: 310g.
Summing up a huge range of options it’s clear that the new DEORE XT M8100 series provides high-performance features for today’s demanding and adventurous mountain bikers, whereas the SLX M7100 series, sharing the same DNA, draws on this inspiration to bring quality performance to those discovering the fun of mountain biking.
Henry Bosch, Shimano Europe MTB product coordinator: “Whilst speed, focus and control was the mantra we lived by during the XTR development, we needed to widen that for DEORE XT and SLX. We thought a lot about how and why people ride mountain bikes. For us the answer was in making a set of components in the right grade and specification to match the competitive ambitions, the adventurous riding styles and the performance quality of mountain bikers across the globe, above all making sure that riders receive durable performance to have as much fun as possible.”
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