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HFM 2 Piece Rotors any good?

No Crust Racing
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No Crust Racing Grand Master

No Crust Racing

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Posted

I've grabbed some 350z Brembos for the Silvia and am looking at rotor options, I was just going to grab some DBA 4000 series and good pads and call it a day as it's a lighter car already, but have seen these are not too much more for a bit of weight saving. Can't really justify DBA 2 piece prices. Car will be on slicks and will have a little bit of poke depending on state of tune. 

Who has used them for track work? I'll be doing sprint style driving. I see some people have pad knock back issues with 2 piece rotors though. 

HFM.Parts 324mm Front Two Piece Rotors Suits: 350Z Z33, Skyline V35

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260DET Experienced

260DET

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Posted

Never heard of them but pad knock back is more likely caused by suspension flex around the axle. Full floating rotors will help stop this, they are flexibly mounted so they move with the flex rather than oppose it. Ceika kits for one have this as an option together with anti knock back springs.

No Crust Racing Grand Master

No Crust Racing

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Not a lot of fully floating rotors around for these calipers.

 

I've committed to Z33/33R Brembos for now but I'll keep that in mind. 

Can maybe pop some springs in if needed as a stop gap if needed?

  • 2 weeks later...
  • 2 weeks later...
hardsteppa Grand Master

hardsteppa

Posted
Posted
On 03/12/2021 at 5:05 PM, 260DET said:

Well AD buying stuff and then saying whoops! makes it hard for us to help, best to ask before buying.

You mean like the time you bought a diff from me without asking or checking the specifics of the different types available? Whoops! 🤙

 

  • Haha 1
260DET Experienced

260DET

Posted
Posted
On 16/12/2021 at 7:19 AM, hardsteppa said:

You mean like the time you bought a diff from me without asking or checking the specifics of the different types available? Whoops! 🤙

 

That's right, just passing on what I learnt ha ha.

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