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Author Topic: Front Brake Upgrade  (Read 2325 times)

Offline dragonz

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Front Brake Upgrade
« on: March 09, 2010, 11:08:08 AM »
I recall reading somewhere that the YFZ450 front calipers are a direct bolt-on
This would be a significant improvement over the 660 calipers IMHO
I have some nice metallic sintered front pads now, & have some braided brake lines on order, but would like to go for some better calipers too
2003 Raptor 660LE
719cc with Kenz 13.5:1 piston
X-4 cam & no decomp
39mm FCR's
HV ported head
Ferrea SS Valves
CT Sonic Exhaust
GYTR Clutch

ASR +3+1 A-Arms & Works Tripple Rates
450 Front Calipers
+2 Extended Swingarm
G-Force Axle & Hubs.
Pro Armour Skid Plate
Tusk Nerfs


Gonna be a fun ride now!

Offline Mad Dog

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Re: Front Brake Upgrade
« Reply #1 on: March 09, 2010, 11:48:28 AM »
Heard about this, used to be lots of good info posted about it, don't know where it is though.

Offline Krandall

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Re: Front Brake Upgrade
« Reply #2 on: March 09, 2010, 12:23:16 PM »
I know for a fact (remember reading the 660 section for whatever reason....) but the yfz calipers are direct bolt on. I think the only thing that had to be modified was the plastic dust shield.




*edit*

looking now to make sure though.  :lol:


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Offline Krandall

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Offline dragonz

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Re: Front Brake Upgrade
« Reply #4 on: March 09, 2010, 12:26:09 PM »
I shall investigate further, some cheap enuf on ebay
2003 Raptor 660LE
719cc with Kenz 13.5:1 piston
X-4 cam & no decomp
39mm FCR's
HV ported head
Ferrea SS Valves
CT Sonic Exhaust
GYTR Clutch

ASR +3+1 A-Arms & Works Tripple Rates
450 Front Calipers
+2 Extended Swingarm
G-Force Axle & Hubs.
Pro Armour Skid Plate
Tusk Nerfs


Gonna be a fun ride now!

Offline Segkast

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Re: Front Brake Upgrade
« Reply #5 on: March 09, 2010, 12:41:47 PM »
Haven't talked to anyone in a while who has done this, but a few years ago I was talking to someone who said it was an AMAZING upgrade, and WELL worth it ! One day I plan on getting around to this as well. Love to hear your review when you get it done
Oury grips & Yamalube

Offline Mad Dog

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Re: Front Brake Upgrade
« Reply #6 on: March 09, 2010, 12:54:46 PM »
Looks like a set of the calipers goes from 75-150 bucks depending on the year, condition, and generosity of the seller.

Offline Krandall

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Re: Front Brake Upgrade
« Reply #7 on: March 09, 2010, 01:36:22 PM »
Wonder if you'd be able to score a better deal off of YFZ Central..

MAY be worth PM'ing Kyle on here (not sure of his screen name.. mini-ho) he comes in once in a while..

He parted out his last YFZ. He may have parts lyin around.


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Offline dragonz

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Re: Front Brake Upgrade
« Reply #8 on: March 11, 2010, 03:21:41 AM »
might have a set $50 for 07's.........
We shall see
2003 Raptor 660LE
719cc with Kenz 13.5:1 piston
X-4 cam & no decomp
39mm FCR's
HV ported head
Ferrea SS Valves
CT Sonic Exhaust
GYTR Clutch

ASR +3+1 A-Arms & Works Tripple Rates
450 Front Calipers
+2 Extended Swingarm
G-Force Axle & Hubs.
Pro Armour Skid Plate
Tusk Nerfs


Gonna be a fun ride now!

Offline Krandall

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Re: Front Brake Upgrade
« Reply #9 on: March 11, 2010, 08:56:47 AM »
Sounds like a steal, and from what I've been reading about this, its an awesome upgrade :)


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Offline dragonz

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Re: Front Brake Upgrade
« Reply #10 on: March 15, 2010, 02:16:49 AM »
Sounds like a steal, and from what I've been reading about this, its an awesome upgrade :)
Missed on a couple of cheap sets, but would have wanted to re-kit, & new pads.
Got a BRAND NEW UN-USED set for $150, too good to pass up!
2003 Raptor 660LE
719cc with Kenz 13.5:1 piston
X-4 cam & no decomp
39mm FCR's
HV ported head
Ferrea SS Valves
CT Sonic Exhaust
GYTR Clutch

ASR +3+1 A-Arms & Works Tripple Rates
450 Front Calipers
+2 Extended Swingarm
G-Force Axle & Hubs.
Pro Armour Skid Plate
Tusk Nerfs


Gonna be a fun ride now!

Offline dragonz

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Re: Front Brake Upgrade
« Reply #11 on: March 20, 2010, 05:33:46 AM »
The new calipers were complete with NEW pads, & I have a set of braided hoses coming as well.
Went whole hog & got a G-Force axle as well.
Now just the rear shock & swing-arm to decide what to do about & i'll be set.
Thinking to cut & stretch the existing swing-arm, but will then need a heavier spring or upgraded shock & spring.

Will post pics & a review of the brakes when fitted
2003 Raptor 660LE
719cc with Kenz 13.5:1 piston
X-4 cam & no decomp
39mm FCR's
HV ported head
Ferrea SS Valves
CT Sonic Exhaust
GYTR Clutch

ASR +3+1 A-Arms & Works Tripple Rates
450 Front Calipers
+2 Extended Swingarm
G-Force Axle & Hubs.
Pro Armour Skid Plate
Tusk Nerfs


Gonna be a fun ride now!

Offline Peelz

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Re: Front Brake Upgrade
« Reply #12 on: March 20, 2010, 07:59:46 AM »
yeah post a review for $hits and giggles. I have NEVER heard of this. Didn't have a problem with the stock 660 ones. But this sounds cool.
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Offline dragonz

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Re: Front Brake Upgrade
« Reply #13 on: March 20, 2010, 01:57:47 PM »
Well after the brakes I'm used to on my road bike they are very spongy, even when freshly bled.
I still thought they were fine until I started racing against the 450's, & they have lots more braking power than my 660 does, so I decided time to do something about it!
2003 Raptor 660LE
719cc with Kenz 13.5:1 piston
X-4 cam & no decomp
39mm FCR's
HV ported head
Ferrea SS Valves
CT Sonic Exhaust
GYTR Clutch

ASR +3+1 A-Arms & Works Tripple Rates
450 Front Calipers
+2 Extended Swingarm
G-Force Axle & Hubs.
Pro Armour Skid Plate
Tusk Nerfs


Gonna be a fun ride now!

Offline dragonz

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Re: Front Brake Upgrade
« Reply #14 on: June 16, 2010, 04:25:43 AM »
Some small progress!
You have to cut the plastic disk guards back a little or they interfere with the new calipers, but once this is done, it is a straight bolt up.
(more to come)



2003 Raptor 660LE
719cc with Kenz 13.5:1 piston
X-4 cam & no decomp
39mm FCR's
HV ported head
Ferrea SS Valves
CT Sonic Exhaust
GYTR Clutch

ASR +3+1 A-Arms & Works Tripple Rates
450 Front Calipers
+2 Extended Swingarm
G-Force Axle & Hubs.
Pro Armour Skid Plate
Tusk Nerfs


Gonna be a fun ride now!