Sterling Silver Bracelets With Turquoise, H11 Head Studs - MAPerformance Ultimate Duty!. Sep 18, 2019 — These H11 Head Studs are manufactured specifically for us by A1 Technologies and utilize an H11 material that is much stronger than the . Nike Sb 2004, Custom H11 head studs 2013+ Focus ST. These studs are made from h11 tool steel. Direct fit, no machining required to the block or cylinder head. Includes ARP nuts and washers.$385.00 Sterling Silver Monogram Bracelet, Custom H11 head studs Mazdaspeed3/6. These studs are made from h11 tool steel. We have tested these in vehicles making up to 800hp. Direct fit, no machining required to the block or cylinder head.$385.00 Sterling Silver Nail Bracelet, Lamspeed Racing H11 Pro Series Headstuds - Toyota .. These H11 tool steel headstuds are manufactured specifically for us and are much stronger than the typical 8740 chromoly and H13 tool steel and yields a .A$1,200.00 · ‎30-day returns · ‎In stock Turquoise Sterling Silver Bracelet, SpeedFactory Racing Extreme Duty H11 Head Stud Kit. Superior H11 Alloy steel, much stronger than the typical 8740 chromoly. Achieve higher clamp loads of 240,000-260,000 psi as opposed to the competitions 190,000 .$377.14 · ‎14-day returns · ‎In stock Shein Bracelets Kit, Cosworth H11 Head Studs SR20DET. Cosworth Ultra High Performance Head Studs are manufactured from H11 tool steel with 260,000psi tensile strength and come complete with nuts and washers. Rating: 5 · ‎1 review · ‎$450.80 · ‎Out of stock Lapis Lazuli Men's Bracelet, ARP's vs. H11 head studs. Sep 27, 2008 — So the H11 are the highest rating available, this translates into the ability to apply higher clamp load with the fastener, also that the higher .Elite H11 Head StudsSep 29, 2011Retorquing h11 headstudsFeb 2, 2011More results from www.powerstrokenation.com Little Debbie Marshmallow Supremes, Titan Motorsports A1 H11 (L19) Head Stud Kit R35 GT-R .. Titan Motorsports is proud to announce the all new TMS H11 Head Stud and Main Stud Kit for the GTR R35. The H11 stock dimension head studs have approximately.14-day returns Men's Bracelet Size Chart, FULL BLOWN H11/L19 HEADSTUDS HONDA S2000 S2K .. Full Blown Motorsports Honda S2000 F20c H11/L19 Head studs -made from H11/L19 Tool steel made to handle 50+ psi (260ksi tensile strength)$499.00 · ‎Free delivery over $99 Copper Fit Bracelet, MAP Ultimate Duty H11 Head Studs | 7 Bolt DSM and Evolution. 2:15Today we are going to check out our Maperformance Ultimate Duty H11 Head Studs for your 4G63 powered DSM or Evo. Consider these an insurance .YouTube · MAPerformance · Apr 7, 2015 Native American Copper Bracelet, A1 Technologies H11 Head Studs - Evo 8/9. These studs are manufactured by A1 Technologies and utilize an H11 material that is much stronger than the typical 8740 chromoly and yields a tensile strength .$267.95 Renoir Copper Bracelet, custom age 625 10mm head studs - Dynotronics. In the past the only solution was to go to the L19 olr H11 tool steel 10mm studs or go straight to 12mm oversize studs. The L19 and H11 studs work very well but .$520.00 · ‎Free delivery over $65 · ‎Free 30-day returns · ‎In stock Vintage Copper Bracelet, MAP H11 Ultimate Head Stud Kit Evo 10. These head studs are 1000+ hp proven, with a tensile strength of 260,000. Hex broach on top of studs allows for easy installation. H11 material is much .A$800.00 Clover Shape Bracelet, Cosworth (High Boost) H11/L19 Head Studs. Essential for high performance engine builds, heavy duty head studs reduce cylinder head movement in high boost or high compression engines optimizing .$399.00 Four Clover Bracelet, HEAD STUDS. HEAD STUDS. THE “ORIGINAL” CUMMINS HEAD STUD! MADE IN THE U.S.A – NO COPIES HERE FOR THOSE WHO ARE SERIOUS ABOUT PERFORMANCE! NOW THE SAME .30-day returns Leaf Clover Bracelet, A1 Technologies H11 Head Studs. Dec 9, 2014 — I have a set of 12mm H11 head studs that were included in the purchase of my truck. I am planning on installing them myself in a few weeks.H11 head studs?? | Cummins Diesel ForumNov 10, 2009H11 head studs: Haisley or A1's??? - Cummins ForumOct 19, 2010H11 head studs are back.. | Cummins Diesel ForumApr 2, 2020h11 head studs torque | Cummins Diesel ForumSep 2, 2014More results from www.cumminsforum.com 10mm Bead Bracelet, Headstuds. MAP H11 vs ARP L19 - Page 4. Evo Engine / Turbo / Drivetrain - Headstuds. MAP H11 vs ARP L19 - I have to decide which to get for my 2.3l stroker w/ HX40 I have been searching through . 2.8.4 Beaded Bracelet, Titan Motorsports 2JZ/1JZ H11 Head Stud Kit. The H11 stock dimension head studs have approximately 21% higher clamp load rating than the standard headstuds for the 2JZ and approximately 4% higher clamp .£413.23 · ‎7-day returns Amber Bead Bracelet, Install Procedure for A1 head studs?. Jul 25, 2015 — I believe the combination of the washer size and the high torque has caused the aluminum to yield. This came to my attention ironically when I . Bead Bracelets Inspo, Cosworth Performance Head Studs. Cosworth Ultra High Performance Head Studs are manufactured from H11 tool steel with 260,000psi tensile strength and come complete with nuts and washers. Bead Crochet Bracelet Patterns, ARP or H11 --- Head Studs??? | Ford Powerstroke Diesel Forum. May 28, 2012 — ARP or H11 --- Head Studs??? . Trying to get my parts list together. Which one? Both are good? . A1 Technologies, H11 $725.00 what is and where .Buy H11's while you still canNov 14, 2013Head Studs ARP vs H11Mar 13, 2020arp vs h11 head studsMar 16, 2020More results from www.powerstroke.org Bead Rosary Bracelet, H11 headstuds same as L19 - The mkiv Supra Owners Club. May 30, 2013 — H11 is rated the same as L19 and has the same properties but some shops list the standard size headstuds as L19 and others H11,. Beaded Cord Bracelets, Tool steel head studs. Does anyone have tool steel head studs in stock. . I know we could make them, but we don't stock H11 or L19 material on the shelf. Beaded Heart Bracelet, 625+ head studs hold 40+ PSi - Page 3. Jan 30, 2014 — H11's are supposed to have a 260,000 psi yield and the ARP 625+ are supposed to have a 260,000 - 280,000 psi yield. Looks like the same ball . Beaded Spiritual Bracelets, A1 / H-11 7-bolt DSM Headstuds - Buschurs LLC. These are manufactured from H-11 tool steel with a tensile strength of 260,000 PSI. These studs provide the absolute best claming load without distortion of the .$279.00 Beaded Stone Bracelet, best head studs 550+bhp | Page 2. Oct 24, 2012 — Its simple really going back to the op's question. Go for a L19 or H11 as they will be more than upto your requirments, handle them carefully . Bts Bead Bracelet, Head Stud Kits. ARP cylinder head stud kits are precision centerless-ground and thread-rolled to Mil-S-8879 specs. Their black oxide finish protects them from wear and .30-day returns Buddhist Prayer Beads Bracelet, TMS TITAN MOTORSPORTS H11 HEADSTUD KIT (1/2 .. These headstuds require you to have your block machined, your head machined, and a custom headgasket. When you absolutely need the very best for your car, and .$545.00 Hematite Bead Bracelet, ARP High Performance Head Stud Kit - 2.0 L/2.3 L EcoBoost. ARP High-Performance Head Studs help to secure and seal the cylinder head to the engine block. Each Kit includes 10 Head Studs, 10 Washers, and 10 12- Point .$224.00 · ‎7-day returns · ‎In stock Knot Bead Bracelet, Titan Motorsports ARP L19 Head studs for Nissan GTR .. The L19 stock dimension Head studs have approximately 35% higher clamp load rating than the oem head studs for the GTR. Made from L19 material, .$649.00 · ‎30-day returns · ‎In stock Lava Beaded Bracelets, MAP H11 headstuds VS ARP L19s?. My build is nothing huge, and I could have gotten away with bolts, so I figured for the cost I may as well stud it. This way if I ever need to pull the head . Lava Beads Bracelets, ARP studs failed! A1 H11 studs installed (Pics) - Page 3. Both times my heads were done at the same dealer by the same diesel mechanic who is a friend of mine.When he checked the heads and block he said they were both . Mm2 Supreme Value List, Titan Motorsports VR38DETT Main Stud Kit | H11 TMS- .. Related Products ; This Item: Titan Motorsports VR38DETT Main Stud Kit | H11 TMS-GTR-ENG-MSK · $706.82 · $599.00 ; Titan Motorsports 2JZ-GTE Head Studs TMS-SUP-ENG- .$599.00 · ‎Free delivery over $200 Native American Bead Bracelet, H11's vs 625 ARP's [Archive]. Mar 16, 2012 · 49 posts · 31 authorsSnapped an h11 stud off last night at 150 pounds torque. Have done 3 sets of arp 425s at 155 pounds torque. Makes no sense to me and kind of . Opalite Bead Bracelet, Cosworth H11 Head Stud Set - Nissan SR20DET. Cosworth Ultra High Performance Head Studs are manufactured from H11 tool steel with 260,000psi tensile strength and come complete with nuts and washers.$524.25 · ‎30-day returns Spiritual Bead Bracelets Meaning, ARP "L19" Head Stud Kit: Toyota Supra Turbo 2JZGTE. The L19 head stud upgrade comes with Studs, Washers, and Bolts for a complete installation. No Modification to your cylinder head or block is required as these .$439.00 Weaving Bead Bracelets, ARP H11 Head Stud Kit For Nissan RB26 GT-R . - eBay. ARP H11 Head Stud Kit For Nissan RB26 GT-R TMS RB26-ENG-HSK ; Fast and reliable. Ships from United States. ; Est. delivery. Fri, Jun 2 - Tue, Jun 6. From San .$649.00 Ankle Bracelet For Large Ankles, ARP L19 Head Stud Kit Mazdaspeed 3 2007-2013. Sep 13, 2017 — The L19 head studs will higher strength under the higher inertia load of a high performance engine. The L19 is ideal for those looking to . Rating: 5 · ‎1 vote · ‎$385.00 · ‎Free delivery over $149 · ‎In stock Diy Ankle Bracelet, ARP L19 Head Stud Kit - VQ37VHR. The L19 head stud upgrade comes with Studs, Washers, and Bolts for a complete installation. No Modification to your cylinder head or block is required as these . Rating: 5 · ‎1 vote · ‎$534.99 · ‎30-day returns · ‎In stock Mr.supremo, ARP Duratec/ Ecoboost 8740 Head Stud Kit. We recommend this head stud kit for normally aspirated engines with up to 13:1 compression! Above 13:1 compression and with boost above 15psi we recommend .$231.70 · ‎In stock Bracelet Strap Watch, ARP Head Studs | 1998.5-2018 Dodge Cummins 5.9L / .. Product Details · ARP 2000 Material - 220,000 psi tensile strength - Part # 247-4202 · Custom Age 625+ Material - 260,000 psi tensile strength - Part # 247-4204. Rating: 4.8 · ‎32 reviews · ‎$502.70 to $1,611.48 · ‎30-day returns Bracelets And Watches, The H11 studs are extremely sensiti. PDFHandling Precautions: The H11 studs are extremely sensitive to contamination from the acid in your skin. You do not want to allow any corrosion on them. Mens Photo Bracelet, TFX LIght Head Studs & Kits. 11A-004-MH-V-TS, TFX Head Stud Kit: Muscle Head Stg V Cyl Hds, All L-19 Tool Steel studs: 5/8" top row x 9/16" bottom row studs. For Std or -.500" Short Deck . Msa Sordin Pro X Supreme, ARP Head Studs for the M113 and M113k AMG | VRP Speed. 220,000 psi Tensile Strength · 200,000 psi Yield Strength · Complete replacement of factory head bolts · Improved Head to Block connection eliminating leaks .$495.00 · ‎$100 delivery · ‎90-day returns Photo Locket Bracelet, HHP Racing. HHP/ARP Custom 625 Head Stud Kit for Gen III Hemi 5.7/6.1/6.2/6.4L - HHP625.$1,795.00 · ‎30-day returns · ‎In stock Baroque Pearls Bracelet, ARP L19 Head Studs for 4G63 7-Bolt Evo/DSM .. The L19 head stud kit includes a full replacement set of 10 studs, 10 washers and 10 nuts with assembly lube. The 7-bolt studs are 11mm (7/16"). Always handle . Rating: 5 · ‎3 reviews · ‎$235.00 · ‎Free delivery over $300 · ‎30-day returns · ‎In stock Childrens Pearl Bracelet, Titan Motorsports TMS H11 Head Stud Kit for NISSAN GT .. SKU TMS-RB26-ENG-HSK $449.99 Call The H11 stock dimension headstuds have approximately 35% higher clamp load rating than the oem headstuds for the RB26.$449.99 · ‎Free delivery over $150 Erwin Pearl Bracelet, ARP 231-4701 Head Stud Kit. That's why ARP head studs are popular among leading Sport Compact/Import racers.You should know that ARP uses a premium grade 8740 alloy that is rated far . Rating: 5 · ‎11 reviews · ‎$144.99 Multi Strand Pearl Bracelet, ARP - Cylinder Head Studs (6-Bolt DSM). ARP Head Studs are made using premium grade 8740 alloy. Each head stud is heat-treated to 190,000 psi to ensure complete heat penetration. ARP head studs .$183.71 Pearl Rosary Bracelet, Head studs and HP. Oct 15, 2021 — They are not really any better than stock head bolts. if you are going to build a motor either get a set of L19's(600whp), h11's(700-750whp), or . I Love You Bracelet Gold, Head Stud Kit BMC A-series, 11 studs Kit #: 206-4204. ARP Product Image. Head Stud Kit BMC A-series, 11 studs. Kit #: 206-4204. Specifications. Socket Size(s), 7/16 12pt, 3/8 12pt, 1/8 Allen, 5/32 Allen. Jobber .$139.88 Black Lokai Bracelet, Power Driven Diesel. ARP studs are thread rolled after heat-treat, which gives them about 1000% (thats ten times) better fatigue strength than those studs that are threaded prior to .$562.28 · ‎30-day returns · ‎In stock Black Heart Bracelet, ARP Head Studs for Honda - Acura B18A B18B B20B & .. ARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior .$192.99 · ‎In stock Bracelet Chain Ring, ARP Head Stud Kit (Evo 8/9). 2G DSM / Mitsubishi Evolution 8/9 ARP Head Stud Kit 207-4203 At MAPerformance.com, we appreciate many forms of “mechanical ingenuity.$143.92 · ‎$801 delivery · ‎15-day returns · ‎In stock Newmar Supreme Aire, A1 Technologies H-11 Head Studs For Mitsubishi 4G63 6- .. Price: $315.00 . These A1 Technologies head studs are the absolute strongest studs available for the Mitsubishi 4G63. These are manufactured from H-11 tool .$315.00 Dainty Chain Bracelet, head studs or factory bolts? | Nissan GT-R Forum - GTR Life. Nov 14, 2012 — The H11 stock dimension head studs have approximately 35% higher clamp load and the main studs have approximately 50% higher clamp load rating . Mens Box Chain Bracelet, ARP Head Studs, Ford 6.0 Powerstroke , 250-4202. ARP 250-4202 Head Studs for your 6.0L. These studs have a higher clamping force than the Ford head bolts and help to prevent blown head gaskets.$598.00 · ‎30-day returns Multi Chain Bracelet, Images for h11 head studs. ARP's L19 material is a premium steel that is processed to deliver superior strength and fatigue properties comparable to A1 Technologies H11 Tool Steel.$1,299.00 Kandi Bracelet Ideas Words, Magnus McLaren L19 Main Bolts and Head Studs. L19 is similar to H11 tool steel and offers the right amount of stretch and torque holding capacity. Over torqueing and torqueing to the yield with a 625 custom .$2,000.00 to $4,000.00 · ‎In stock Lacoste Mens Bracelet, ARP Head Stud Kit R35 GTR. Made from premium H11 alloy steel these studs deliver superior strength and fatigue properties over other brands. These studs remain stock size so no .£435.00 Mejuri Mens Bracelet, Gauging interest: H11 head studs for FI applications. Oct 14, 2013 — Would anyone be interested in an H11 head stud alternative? Pricing would be in the $530 range which is about $250 cheaper than ARP 625+ . One Sword Reigns Supreme, ARP 201-4306 Head Stud Kit. Arrives by Mon, Aug 7 Buy ARP 201-4306 Head Stud Kit at Walmart.com.$298.10 · ‎Free 90-day returns · ‎In stockHONDA / ACURA B18A/B B20B WITH B16 HEAD. ARP HEAD STUD SET-Made from premium grade 8740 alloy steel-Heat treated to 200000 PSI-Premium parallel-ground washers included with each kit-ARP HEADSTUD .$185.95 · ‎Free delivery · ‎14-day returns · ‎In stockTunePlus, Inc. These studs have an even higher UTS (closer to the 280 ksi limit of the material) than the previous L19/H11 offerings and have the added benefit of better .$525.00 · ‎15-day returns · ‎In stockNeed advice on head bolts. Mar 3, 2021 — OEM is good to about 450tq before they stretch and you lift the head. L19's from ARP or Freektunes H11 studs are good for about as much .Freektune - H11 Head studs back in stock! Fits.. H11 Head studs back in stock! Fits Mazdaspeed3/6, Focus ST, EB Mustang, Focus RS.4P 625+ Extreme Duty Head-Studs. 625+ material is substantially stronger than any entry level 8740 head stud material, and substantially stronger than L19. L19 is subject to hydrogen .$529.00 · ‎Out of stockStud Kits | Vividracing.com | Discount Price's | Visit Us!. These studs are made from quality H11 alloy steel and provide incredible strength and fatigue to other brands. These studs remain in stock, so no adjustments .30-day returnsHead Stud Kit to suit Nissan SR20DE & SR20DET (AR102- .. Part number: AR102-4701 ARP - Head Stud Kit to suit Nissan SR20DE & SR20DET 2.0L DOHC (1991-01) M11 (Under Cut). Alternate part numbers: AR1024701 102-4701 .A$389.00 · ‎In stockARP Head Studs Mazdaspeed3 2007-2009. Part #: 218-4702 The ARP Head Studs for the 07-09 Mazdaspeed3 are constructed of a premium grade 8740 alloy that is rated far superior to aircraft quality.$8.64Cosworth H11 Head Stud Set - Subaru Impreza WRX STI .. · Translate this pageCosworth H11 Head Stud Set - Subaru Impreza WRX STI EJ20/25 11mm . Essential for high performance engine builds, heavy duty head studs reduce cylinder head .€765.84 · ‎In stockARP Head Studs. ARP HEAD STUDS FOR 2.3L MZR AND 2.0L MZR ARP Fasteners have been in the racing game for a long time creating the highest strength fasteners in house since .$179.00 · ‎In stockHEAD STUDS KIT,14MM 24V. HEAD STUDS KIT,14MM 24V.$828.26 · ‎30-day returnsHead/Main Studs - Mazdaspeed DISI MZR. ARP Main Stud Kit There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting .arp head stud kit - dart ls next iron block - 23-bolt - 234-4341. ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining.$571.13 · ‎$20 deliveryMy inlinePro studs lost torque, blew headgasket (L19) - S2KI. "Our F20/22C M-series M12 Extreme Duty head studs are made from a JIS super alloy with high nickel content. We developed these to replace the L19 and H11 head .ARP Head Studs for Subaru EJ20/EJ25 DOHC 625+. This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric .$500.00Arp L19 headstuds same as H11. Arp L19 headstuds same as H11, does anyone carry these. don't want to spend 130+ more for the same bolts.ARP H22 Headstud Kit. ARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior .$195.00 · ‎In stockWhat are the best head studs out there?. Jan 30, 2013 — And finally there are the new, A1 Technologies Head Studs made from H11 tool die steel. These claim to be the best of the four, with a tensile .ARP Head Studs - 94-97 'OBS' 7.3L. ARP Head Studs · ARP 7.3L Headstud Kit. Part Number: 250-4201. Manufacturer: ARP. $940.39 · ARP 7.3L Main Stud Kit 94-03. Part Number: 250-5801. Manufacturer: ARP.30-day returnsA1 h11 head stud torque specs. Feb 28, 2012 — A1 h11 head stud torque specs ; Chevy1925. don't know sh!t about IFS · Oct 21, 2009 ; SSchmi5519. LLY Cult Leader. Oct 19, 2008 ; delong_1. << my .ATS Diesel Head Stud Kit | OC DIESEL Blog - WordPress.com. Jul 15, 2010 — ATS Head Studs are made from a very high quality and high strength H11 steel which will keep your Duramax's heads where they belong even .6.4L ARP Pro Series Power Stroke Cylinder Head Stud Kit. These ARP studs are rated at 220,000 psi tensile strength, and provide the clamping force required to keep cylinder heads from lifting due to higher .$559.99 · ‎Free delivery over $100 · ‎In stockINSTALLATION METHOD FOR HEAD STUD KITS. PDFIf the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP. THREAD SEALER. 4. Screw studs into the block “HAND .ARP 256-4702 12 point Head Stud Kit - 12mm (2011-2012 .. The head stud kit features premium grade ARP2000 material that is rated at 220,000 psi tensile strength. ARP fasteners are centerless ground, heat treated prior .$50.00 · ‎30-day returnsR35 GT-R Titan Motorsports A1 H11 (L19) Head Stud Kit. Titan Motorsports is proud to announce the all new TMS H11 Head Stud and Main Stud Kit for the GTR R35. The H11 stock dimension head studs have .£649.00Ej22 Head Studs. Pack of lightweight head studs ARP 2000 PRO Series for Subaru EJ phase 2 engine EJ20 EJ22 EJ25 SOHC from 1999 Standard reinforced head studs.Cylinder Head Stud Kit- L19 DCR Extreme Kit. DCR SRT4 L19 Extreme Head Stud Kit. This replaces the traditional DCR H11 head studs which are no longer available. We took engineering to a higher level by .ARP Diesel Head Stud Kit 1998.5-2023 Dodge 5.9L / 6.7L .. ARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior .$573.41 · ‎30-day returns · ‎In stock2G - L19 ARP Head Studs Vs Reg ARP Studs. Nov 4, 2017 · 2 answersI was also told about MAP Ultimate Duty H11 Head Studs 7 Bolt DSM whats word on those? '99 GSX aka Twizted "Be Blessed".fs:h11 head studs bnib | Mitsubishi Lancer Evolution Forum. Oct 18, 2013 — BRAND NEW IN THE BOX h11 head studs from map! 160 shipped.Need help with H11 and H13 material to be used .. Mar 24, 2014 — by any means, but Im looking for your opinions on the materials H11 and H13 ( specifically for use as headstuds on diesel engines ). I dont know .5 posts  ·  Natty, What is your target clamp load for each stud and what are their diameters and thread .ARP Head Stud Installation. PDFDo not attempt to replace all bolts at one time. Your goal is to maintain torque on the cylinder head until all stock bolts have been replaced with ARP studs .Extreme Studs. Our studs are made from a fine grain, hi-strength - 220k Min. tensile steel specifically designed for heavy duty, . HEAD STUD KIT for 5/8" DECK PLATE.6.6L Chevy Duramax Head Stud Kit 2001-2016. Unleash the full potential of your diesel engine with head studs designed to for ultra-high clamping force that greatly exceeds the standard, factory-made bolts . Rating: 4.9 · ‎91 reviews · ‎$304.86 · ‎Free delivery · ‎Free 30-day returns · ‎In stockEnjuku Racing - A1 Tech H11 Head Studs - SR20DET. Oct 25, 2014 — These studs are manufactured by A1 Technologies and utilize an H11 material that is much stronger than the typical 8740 chromoly and yields a .IP Extreme Head Stud Set - Honda S2000 F20C/F22C. The F20/22C M-series M12 Extreme Duty head studs are made from a JIS super alloy with high nickel content. IP developed these to replace the L19 and H11 .$289.99Engine Fasteners 101: Keeping It All Together. Oct 15, 2015 — Cosworth also offers H11 tool steel head studs for select applications. The H11 tool steel is also rated at 260,000 psi for ultimate strength.