TRP Spyre flat mount disc brake weight specs and first look
By Pedal Power
Summary
## Key takeaways - **Bought for $50 on Amazon**: It was purchased on Amazon for $50 from seller cycling deal underscore USA, ordered as front but labeled rear. [00:10], [00:23] - **Dual-pad design for even wear**: When the brakes compress both pads on the top and bottom move in together for even pad wear and even for the rotor so you get compression on both sides of the rotor hopefully evenly. [02:39], [02:48] - **Complete system weighs 311g**: Caliper with pads and hardware not including fork bolts at 177.4g, rotor 116.7g, two mounting screws 7.3g, whole system with rotor and six rotor bolts at about 311 grams. [05:39], [06:54] - **Adapter flips: 140mm or 160mm**: One side of the adapter says F4 140 millimeters, the other F 160 millimeters; flip it around to switch between 140mm and 160mm rotors. [03:47], [04:08] - **Pad adjustment with 3mm Allen**: Two 3mm Allen key screws already pre-attached to the caliper; tighten to push pads inward equally on both sides. [04:42], [05:03] - **Mount loose for alignment**: Don't tighten adapter bolts fully initially; leave loose to adjust caliper fore-aft, left-right, up-down for perfect rotor centering before final torquing. [08:26], [09:09]
Topics Covered
- Dual-pad design ensures even wear
- Adapters flip for 140/160mm versatility
- Total system weighs just 311 grams
- Leave adapter loose for alignment
Full Transcript
welcome back in front of me I have a TRP spire flattened mount road alloy mechanical dis brick caliper and rotor
set it was purchased on Amazon for $50 and the seller was cycling deal underscore USA I did order a front and as you can see here it says rear so I
just want to see if it fits on the front fork so as you can see it's still all packaged up and I think it did qualify
for expedited shipping you have a Prime membership and this is not in retail as you can see it looks like it's om just
comes in this package yeah it does come with a 160 millimeter rotor which I got here but it is only a six bolt and I
believe I will be using Shimano's center lock rotor so I will have to get another rotor in order to use this and these are
the contents well good to take a look at the spire mechanical disc brake installation instructions and that's
what it says all right up top this is the standard spire flat mount disc brake there's some more information on the
adapter or some of the hardware information and some of the bolt lengths there's also a back page on this that
shows some more further information I'll just move it down a little bit it falls it if you want to read any of this
here's the last bottom section of the second page for the instructions also included are some mounting hardware and
I'll take a look at that and here you can take a look at the caliper itself and there is an adapter it says f-16 to you so hopefully that does mean that
it's for the front and it looks like the pads are already installed and you could tell the mounts here that this is a standard spire and
not the SLC I think the SLC is also carbon here or a different material and also here the mounting hardware is a
little different for the SLC so this is a regular standard trp spire and I think
the good thing about this is when the brakes compress both pads on the top and
the bottom move in together for even pad wear and even for the rotor so you get compression on both sides of the rotor
hopefully evenly so I have a front disc fork here and it looks like it should
fit if the holes line up perfectly so even though it said rear on the bag it should fit for the front fork so
included were a lot of screws so there are six of these and there are two of those and we'll take a look to see where
they would go on this so it looks like the longer screws will be going in sign
here to mount onto the fork CFE but the other these right here I'm not exactly sure where they go guess got to read the
instructions also here's one thing to note that right here says f4 140 millimeters but if you were to turn it
around the other side of the adapter it says F 160 millimeters so if this is pointing upwards on this side then it's
a good adapter for the hundred and sixty millimeter rotors and if you pull these off and then mount it on another tab here so flip this around and mount it
this way without facing up then this adapter also works for 140 millimeter I opted to get the hundred sixty millimeter rotor because it's for the front of my brake the front brake for
the front of my bike and therefore wanted something a little stronger it's gonna be probably a little bit more rotational weight but I think it's worth it just if you get it better braking
also notice that there's two screws already in here that come with the caliper that's already pre attached this
is a three millimeter allen key on the other side you also have this three millimeter allen key so when you turn this tighten it and pushes the pad
inward I believe and that's how you set which way or how far the pads go let's go look at this one more time let's
pretend it's on the bike which is here so if it's mounted here and you tighten and as that happens both sides of the
pads should come in equally okay as is with the pads in and some of the hardware not including the two screws
that mount to the fork we're looking at a hundred and seventy 7.4 grams
also included was this disc rotor that's about one hundred and sixteen point
seven grams the two mounting screws come in at seven point three grams for the pair and the whole system complete with
the two bolts the caliper disc rotor comes in at 310 grams okay now it's
obvious very obvious that P screws are actually for the rotor so there you go that's why there's six of them perfectly for the rotor let me go add those on it's gonna add a little more than 310
grams well all six of the screws are there let me see if I didn't tear it right it can't be only a tenth of a gram
this off take this off for thee yeah huh I guess it is about 311 grams
that means these screws these bolts are actually real light ten grams let's try
it one more time throw these all along twenty grams plus one hundred and twelve
hundred 15 grams red 136 I don't know if it's sitting somewhere else I'm just
coming out to be three ten point eight and I might get ballast that so you
could still see all right quick quiz time what's wrong with this picture if you guessed it right it's not an
upside down I also made another mistake when installing this is when I was putting the bolts in I didn't tighten these down so let's go see these right
here is a four millimeter so I'm gonna go ahead and tighten this one down and tighten this one down just to make sure
it gets in real snug guess they keep it loose just in case you want to go with a 140 or you know I'm not sure if you're
160 so stock its 160 and then you could always switched around to one for it if you want to and then the same four
millimeter bolts you will have you could use also to install on these mounts at the bottom here so when you initially
install these onto the fork you don't have to make them too tight so so right here in the front see it's already a little snug so you could back it off just a little bit and the reason doing that is because after you install this
on to the fork you're gonna have to you may have to use this to adjust it to adjust the position
if it's four or aft left or right up or down depending on how wide or how close your disk is on the bike so you
just kind of leave it in like this and then you're not gonna crank it down tight until you find the correct position where the disc rotor is of the rotor is out here push it out a little bit if it's slightly in you can move it
in just a little bit to line it up real good so another thing to look at is where the cable enters so it enters right here and also this is going to be
a little bit of a bend if you want to want to use the internal routing through the four to pop up to the top here so it
should be okay if it just bends about this much to get in and it looks like it fits this is a flattened mount disc brake caliper and it fits the fork
almost perfectly so I'm actually quite happy with it looks real nice on the fork there so I'm not sure if this measurements really gonna help anything
much here we coming to a buck oh this is an inches go change that out two millimeters thirty nine millimeters across and the other thing is you just
want to make sure that the spokes don't hit this a lot of times if the spokes you have a wide flange hub so the hub comes out real wide and the spokes come
out and real wide but by the time they go in they could actually rub against this I've seen a fellow cyclists with wheels that when they break they the
spokes hit and interfere right here so I also all my build went with some bladed spokes to make them just a little bit
more narrow and now because I have the calipers out I'm just gonna say that
it's about 1.75 millimeters thick and that's good to measure off initially so you could check pad wear and
and when you get more miles on this rotor yeah it's pretty consistent about 1.7 to 5 millimeters consistent
thickness 9 GF and it should be the
hundred and sixty millimeter rotor 160 - twenty-nine not sure what the 29 is and
it is a six bolt disc rotor just a little bit more not this rotor well there you have it there is a
contents of the TRP spire mechanical disc break-in 160 millimeters for lap mount let me know if you have any
questions in the comment section below and thank you for watching and enjoy the rest of your day and also thanks for subscribing if you do appreciate it
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