BMX stem Archives – BMX UNION

Cinema BMX – Corey Martinez Signature Martinez Stem

Is it time for a new BMX Stem? Cinema BMX have released this new Corey Martinez signature Martinez Stem for you to get your hands on. This top load stem features a classic design with a responsive 48mm reach, 22mm rise (8mm inverted), and 30mm stack height. It’s CNC machined from 6061-aluminum with beveled edges, a rounded back, a Cinema logo on the top plate and a recessed top for a flush fork compression cap. You can also find 6 oversized solid bolts to hold everything together nice and tight!

The Martinez stem is available in Sandblast Black, Polished Silver and Sandblast Medallion Bronze with a weight of 10.9 oz. and a $54.99 price tag. You can pick this stem up in BMX shops and mail-orders that carry Cinema BMX worldwide now, or by hitting up the Cinema BMX webstore!

Sandblast Black

Polished Silver

Cinema BMX Martinez Stem Specs
Colors: Sandblast Black, Polished Silver, Sandblast Medallion Bronze
Reach: 48mm
Rise: 22mm (8mm Inverted)
Stack Height: 30mm
Material: 6061-T6 Aluminum
Bolts: Solid Oversized w/6mm Allen Hex
Weight: 10.9oz

What do you think of the new Martinez Stem from Cinema BMX? Do you have any questions? Let us know what you’re thinking in the comments below!

Not quite what you’re looking for? Check out more BMX Stems here!

You can learn more about Cinema BMX, their products and team by visiting CinemaBMX.com!

Demolition Parts – Kevin Peraza Signature KP Stem

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Is it time for a new BMX Stem? Here’s a look at the new Kevin Peraza signature KP Stem from Demolition Parts! This front load style stem has a 50mm reach, 32mm stack height, 8.5mm of rise (23.5mm inverted) and weighs in at 10.0 oz. This stem sticks with a classic front load design without too many bells and whistles, but it does have beveled edges, a rounded back for the knees, a recessed top for your fork cap, a Demolition logo etched into the front plate and Kevin’s logo on the top of the stem. They’ve kept it clean and simple, and it looks real good. Available in black for $62.99 through BMX shops and mail-orders that carry Demolition Parts worldwide.

What do you think of the Kevin Peraza signature KP Stem from Demolition Parts? Are you digging it? Do you have any questions? Let us know what you’re thinking in the comments below!

Shadow Conspiracy – Matt Ray VVS Stem Promo

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The Shadow Conspiracy coming through with a new promo video featuring Matt Ray putting his signature VVS Stem to heavy use out in Arizona! Matt is on a whole different level and this video will definitely have you scrolling back to re-watch some of these clips! Hit play, take it all in, then hit up the Shadow Conspiracy Website to learn more about the stem!

Also, if you want more riding from Matt, make sure you watch his Matt Ray “AZ Heat” video!

“The latest addition to our collection of stems, the Matt Ray signature VVS stem. Matt’s very particular about his ride and wanted
the optimum bar position, stability, control, and a front load. The VVS stem combines that with Cold Forged construction to give you maximum strength.
Watch Matt destroy some AZ street spots and put his new VVS Stem to the test.

Filmed and Edited By: Ryan Chadwick“

The Shadow Conspiracy – Mat Ray Signature VVS Stem Promo

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The Shadow Conspiracy coming through with a promo featuring Matt Ray putting his signature VVS Stem to work at a few different skateparks. As always, Matt delivers so seriously heavy riding that you won’t want to miss. After you check that out, get a look at the stem down below! Available through BMX Shops and mail-orders that carry The Shadow Conspiracy worldwide and in their Webstore now.

“The latest addition to our collection of stems; the Matt Ray signature VVS stem. Matt’s very particular about his ride and wanted a front load stem with optimum bar position, stability, and control. The VVS stem combines that with Cold Forged construction to give you maximum strength.
Watch Matt shred some of the many concrete parks of AZ and put the VVS Stem to the test.

Filmed and Edited By: Ryan Chadwick”

Matt Ray Signature VVS Stem
Cold forged & CNC machined 6061-T6 Alloy
Heat treated cro-mo M8 solid hex bolts
Reach: 48mm / Rise: 8.5mm
Stack Height: 27mm / Width: 48mm
Weight: 11.3oz.

Available through BMX shops and mail-orders that carry The Shadow Conspiracy worldwide and in The Shadow Conspiracy webstore for $36.99 now!

United – The Purge Stem

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Is it time for a new BMX Stem? Here’s a look at the new The Purge stem from United. The stem looks like your regular topload stem, but they’ve actually designed it so the front of the top plate actually touches the bottom of the stem where normally that isn’t something you want to do. They’ve done this to improve clamping and helps ensure that your bars are even. Get the full scoop from United below!

“Everyone knows that resetting your bars is the worst possible thing. It takes forever for your mind to agree that the bars feel how they did before slipping. We wanted to design a stem that clamped tight and evenly at that. We had seen stem bolts snap from a rocky plate and uneven tightening. With the PURGE stem we wanted strength and durability so we went with a fully CNC 6061 Ali block including a CNC’d United graphic on the side. You will notice the clamping system clamps completely shut up front. This is to stop the uneven tightening. Simply tighten the front bolts to lock your bars in place evenly then clamp down on the back to fully secure your bars in place.

The stem comes with a 49mm reach and a 34mm rise. Giving you the option to ditch those ugly headset spacers and tidy up the look of your bike.” – United

Color: Black or Polished.
Material: Full CNC Machined 6061 Alloy
Reach: 49mm
Rise: 34mm

What do you think of The Purge stem from United? Do you have any questions? Let us know what is on your mind in the comments below!

Not quite what you’re looking for? Check out more BMX Stems.

BMX Stem Geometry Explained

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Are you thinking about picking up a new BMX stem, but you aren’t really sure what all of those measurements really mean? Here’s a video Brant Moore put together going in-depth on the different measurements like reach, rise and stack height, along with a measurement you might not have heard of called extension. Along with that, Brant discusses some of the different features on stems like CNC machining for weight savings and cleaner looks, a wider stem for increased strength, the 1″ OD size that brands like Wethepeople, BSD and Cult have been trying out, the grooves that Flybikes offer on their stems, knurling, etc. Brant also covers solid and hollow bolts, and a few other things. This will definitely help if you are curious what you need to know when it comes to stem geometry and features. Hit play and take it all in!

“BMX stem geometry appears quite simple at first glance, and for all practical applications of stem geometry, it is as simple as it seems.
However, there is more than meets the eye and a lot to talk about in regards to BMX stems and their geometry.

Hopefully this video can help you make an educated decision the next time you’re in the market for a new stem!” – Brant Moore

Sneak Peek: The Shadow Conspiracy – Matt Ray Signature VVS Stem

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Here’s a little sneak peek The Shadow Conspiracy released giving you a closer look at the new Matt Ray signature VVS Stem that will be dropping in Marh! Not much for details on this front load stem, but based on the photo it looks like it appears to be cast with some additional machining with the Shadow crow logo on the front plate, a BBS logo up top, a recessed top for a flush fork cap and a rounded back for the knees. This is also a sneak peek look at what appears to be a new Copper color that they will be releasing as well.

We’ll keep you posted once we get the full specs, details and more when it drops in March!

Cult – Dakota Roche 1″ OD Bar & Stem

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It looks like your options for the larger 1″ oversized bars and stems have grown. Wethepeople and BSD have offered the size for about two years now, but it really hasn’t caught on too much. It looks like Cult have decided to give it a shot and have released their new Dakota Roche signature 1″OD Dak Bars and Dak Stem for you to check out. Above is a short promo filled with some heavy clips from Dak you won’t want to miss and below is specs and details on both items. Just remember, if you decide to make the switch to the 1″ OD size, you’ll need BOTH bars and a stem!

First off, let’s explain the size… The traditional BMX bars and stem size works well, but with the way BMX riders have progressed and been sending it on bigger and gnarlier setups (IE: Dak’s video above), the larger diameter gives you increased strength and more stem grab to prevent breaking and resist slipping. This is definitely ideal for the crazier riders out there that have had issues with breaking bars.

DAKOTA ROCHE SIGNATURE DAK 1″ OD STEM

The Dakota Roche signature DAK 1″ OD stem is made from CNC machined 6061 aluminum with a 51mm reach and 32mm rise. The stem has the larger 1″ diameter for clamping with beveled edges, a rounded back, solid chromoly bolts and a recessed top for a flush fork cap. The body of the stem also has an engraved Dak logo. Available in Black only for $64.99 through Cult dealers worldwide and online.

DAKOTA ROCHE SIGNATURE DAK 1″ OD BARS

The Dakota Roche signature Dak bars in the 1″ OD size are made from 100% heat-treated and butted chromoly tubing with a 28″ width, 11-degrees of backsweep and 2-degrees of upswpeep. The bars feature that larger 1″ diameter tubing where the stem clamps, then tapers down to the standard size so they will feel like traditional bars. There’s cult lines on the ends to help trim the bars down if you need to as well.

The Dak 1″ OD bars come in Black and Chrome color with 8.85″ and 9.5″ rise options for $64.99 through BMX shops and mail-orders that carry Cult worldwide.

Reminder: You need BOTH a 1″ OD stem and 1″ OD bars. You can’t take your existing bars or stem and match them with the larger size, unless you already have a WTP or BSD stem or bars with that same size.