Renthal Twinwall question

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1/30/2019 9:26 AM

What's up everybody.

I bought 3 used renthal twin twinwalls 999 and they appear to not be exactly the same. The length seems to varies.. saw that it got some numbers on them that's different between them.
QC 125, QC 148, QC 139 and the bar on my bike got QC 118. Photo
What does QC stand for?
Photo

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1/30/2019 9:43 AM

Maybe Quality Control?

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2017 RMZ450
2005 YZ250-sold :,(
1998 YZ250
2005 KX250F

80% of the time it works every time
IG @hammerfamily_4 & @2HRacing
Thanks to : Factory Effex, N2Dirt, Acerbis, DT1, Fasthouse, Matix, FMF, ASV, 100% & Mika Metals

1/30/2019 9:49 AM

That's what I was thinking also. Seems like an irrelevant number being so much different amongst the three seemingly identical bars.

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1/30/2019 9:52 AM

Have you busted out a tape measure to actually check the length of all 3?

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2017 RMZ450
2005 YZ250-sold :,(
1998 YZ250
2005 KX250F

80% of the time it works every time
IG @hammerfamily_4 & @2HRacing
Thanks to : Factory Effex, N2Dirt, Acerbis, DT1, Fasthouse, Matix, FMF, ASV, 100% & Mika Metals

1/30/2019 10:25 AM

mattyhamz2 wrote:

Have you busted out a tape measure to actually check the length of all 3?

BLASPHEMY!

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1/30/2019 10:36 AM

Are you serious dude? I'm usually not a big fan of facts and shit, but you should maybe measure them.

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1/30/2019 10:40 AM

The ones that someone took the cross bar off allowed them to be bent downward which could make the total width actually a few mm wider. I've heard of people taking the crossbar off (ie. pro riders with a ton of resources) but they are truthfully not supposed to be taken off, they WILL bend even without a crash

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1/30/2019 11:45 AM

mx4all wrote:

What's up everybody.

I bought 3 used renthal twin twinwalls 999 and they appear to not be exactly the same. The length seems to varies.. saw that it got some numbers on them that's different between them.
QC 125, QC 148, QC 139 and the bar on my bike got QC 118. Photo
What does QC stand for?
Photo

Probably Renthal's way of knowing which batch they were making that bar in or a date code.

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I'm just here to stir sh#t up...

1/30/2019 12:02 PM

aroark247 wrote:

The ones that someone took the cross bar off allowed them to be bent downward which could make the total width actually a few mm wider. I've heard of people taking the crossbar off (ie. pro riders with a ton of resources) but they are truthfully not supposed to be taken off, they WILL bend even without a crash

I believe renthal has said these are perfectly fine to be ran with no crossbar, which should work since these are stonger than fatbars right?

As far as the different bar lengths, they all look the same to me, just lined up like that with the sweep you will notice a difference. You would need to lay them on the floor flat next to each other, with the mounting surface facing away to really get an accurate eyeball measurement. Or just use a tape measure.

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1/30/2019 12:04 PM

aroark247 wrote:

The ones that someone took the cross bar off allowed them to be bent downward which could make the total width actually a few mm wider. I've heard of people taking the crossbar off (ie. pro riders with a ton of resources) but they are truthfully not supposed to be taken off, they WILL bend even without a crash

50dippin wrote:

I believe renthal has said these are perfectly fine to be ran with no crossbar, which should work since these are stonger than fatbars right?

As far as the different bar lengths, they all look the same to me, just lined up like that with the sweep you will notice a difference. You would need to lay them on the floor flat next to each other, with the mounting surface facing away to really get an accurate eyeball measurement. Or just use a tape measure.

Renthal has said that and has also told many it is totally fine to cut the crossbar. Rumor was some pros have been doing this for a while.

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2017 RMZ450
2005 YZ250-sold :,(
1998 YZ250
2005 KX250F

80% of the time it works every time
IG @hammerfamily_4 & @2HRacing
Thanks to : Factory Effex, N2Dirt, Acerbis, DT1, Fasthouse, Matix, FMF, ASV, 100% & Mika Metals

1/30/2019 2:19 PM

Just curious: if you find the Twinwall's to stiff, why not use the equivalent Fatbar?

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1/30/2019 2:20 PM

CDswinehart wrote:

Just curious: if you find the Twinwall's to stiff, why not use the equivalent Fatbar?

Looks, preference of having a crossbar. Just a couple things I've heard

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2017 RMZ450
2005 YZ250-sold :,(
1998 YZ250
2005 KX250F

80% of the time it works every time
IG @hammerfamily_4 & @2HRacing
Thanks to : Factory Effex, N2Dirt, Acerbis, DT1, Fasthouse, Matix, FMF, ASV, 100% & Mika Metals

1/30/2019 4:39 PM

I bet those bars are identical in width. Your eyes are playing tricks on you because of the bend in the tubing.

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Braaapin' aint easy.

1/30/2019 4:45 PM

aroark247 wrote:

The ones that someone took the cross bar off allowed them to be bent downward which could make the total width actually a few mm wider. I've heard of people taking the crossbar off (ie. pro riders with a ton of resources) but they are truthfully not supposed to be taken off, they WILL bend even without a crash

50dippin wrote:

I believe renthal has said these are perfectly fine to be ran with no crossbar, which should work since these are stonger than fatbars right?

As far as the different bar lengths, they all look the same to me, just lined up like that with the sweep you will notice a difference. You would need to lay them on the floor flat next to each other, with the mounting surface facing away to really get an accurate eyeball measurement. Or just use a tape measure.

mattyhamz2 wrote:

Renthal has said that and has also told many it is totally fine to cut the crossbar. Rumor was some pros have been doing this for a while.

I ran my twinwalls for a few months with no crossbar and it was fine. Thats how they should be. Crossbar = armpump machine

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1/30/2019 4:46 PM

CDswinehart wrote:

Just curious: if you find the Twinwall's to stiff, why not use the equivalent Fatbar?

Why not unbolt a crossbar instead of dropping $100 on another set of bars

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