Sponsored

Inline Pro vs ARP head studs

AaYaku_FL5

Member
Joined
Aug 31, 2026
Threads
2
Messages
9
Reaction score
5
Location
Australia
Vehicle(s)
FL5
Hey guys, looking to upgrade to head studs and I'm tossing up between the inline pro and ARP ones. Just wanting some some feedback or general consensus on what's best for the k20c1 in particular. ARP obviously has been in the game for a while with a good reputation but seems that inline pro specialises in Honda's and have worked well for the L15 platform at least. Cheers
Sponsored

 

Bpebler

Senior Member
First Name
Bobby
Joined
Mar 29, 2022
Threads
2
Messages
77
Reaction score
46
Location
St Louis
Vehicle(s)
21 Ram, 20 Durango, 00 Cherokee, 99 Trans Am
Bump. I'm curious to know as well as this will be a near future mod for myself also I believe.
 

AspecR

Senior Member
First Name
Stefan
Joined
Aug 23, 2022
Threads
14
Messages
2,424
Reaction score
3,820
Location
Florida
Vehicle(s)
FL5 CTR
It's gonna be hard to find info on head studs because the average FL5 doesn't make enough power or is used hard enough to require them. Most owners only upgrade head studs after a motor is blown or already apart. Best to reach out to shops that specialize in high horsepower builds like Ivan or JSR. My car has the 4P 625+ Extreme duty Head studs currently but they're literally overkill for a street car.
 

Bpebler

Senior Member
First Name
Bobby
Joined
Mar 29, 2022
Threads
2
Messages
77
Reaction score
46
Location
St Louis
Vehicle(s)
21 Ram, 20 Durango, 00 Cherokee, 99 Trans Am
It's gonna be hard to find info on head studs because the average FL5 doesn't make enough power or is used hard enough to require them. Most owners only upgrade head studs after a motor is blown or already apart. Best to reach out to shops that specialize in high horsepower builds like Ivan or JSR. My car has the 4P 625+ Extreme duty Head studs currently but they're literally overkill for a street car.
True, but there are plenty of us with far from average builds also. I'm about 3.5 years and 72k miles maxed out on stock powertrain aside from the larger 2k injectors which really is just offering the convenience of going full ethanol instead of 50%.
 

Two Step Performance

Elite Sponsor
Joined
Apr 24, 2018
Threads
48
Messages
961
Reaction score
1,400
Location
USA
Website
twostepperformance.com
Vehicle(s)
2023 Type R
True, but there are plenty of us with far from average builds also. I'm about 3.5 years and 72k miles maxed out on stock powertrain aside from the larger 2k injectors which really is just offering the convenience of going full ethanol instead of 50%.
We made over 400 trouble free dyno pulls on the factory head bolts and were no stranger to 40psi. However, the built in engine we put in does have ARP studs. I've used ARP for as long as I've been turning wrenches and will always continue to do so. I don't have any reason to say anything bad about other brands but head studs were never an area I wanted to experiment in.
 


Bpebler

Senior Member
First Name
Bobby
Joined
Mar 29, 2022
Threads
2
Messages
77
Reaction score
46
Location
St Louis
Vehicle(s)
21 Ram, 20 Durango, 00 Cherokee, 99 Trans Am
We made over 400 trouble free dyno pulls on the factory head bolts and were no stranger to 40psi. However, the built in engine we put in does have ARP studs. I've used ARP for as long as I've been turning wrenches and will always continue to do so. I don't have any reason to say anything bad about other brands but head studs were never an area I wanted to experiment in.
Thank you! You know I always appreciate your expertise and advice! I will contact you when I'm ready to stock up.
 
OP
OP

AaYaku_FL5

Member
Joined
Aug 31, 2026
Threads
2
Messages
9
Reaction score
5
Location
Australia
Vehicle(s)
FL5
We made over 400 trouble free dyno pulls on the factory head bolts and were no stranger to 40psi. However, the built in engine we put in does have ARP studs. I've used ARP for as long as I've been turning wrenches and will always continue to do so. I don't have any reason to say anything bad about other brands but head studs were never an area I wanted to experiment in.
That's very positive to hear, guess I was offput by some horror stories but the more I read it seems like head studs won't be a necessity for what I'm doing unless I'm unlucky
 

Two Step Performance

Elite Sponsor
Joined
Apr 24, 2018
Threads
48
Messages
961
Reaction score
1,400
Location
USA
Website
twostepperformance.com
Vehicle(s)
2023 Type R
That's very positive to hear, guess I was offput by some horror stories but the more I read it seems like head studs won't be a necessity for what I'm doing unless I'm unlucky
Heads studs are HIGHLY necessary on the 1.5T cars but thankfully that is not the case on the 2.0Ts in most cases.
Sponsored

 
 







Top