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Supertech Performance Valves - High Flow Rates - Less Friction - More Power - Featuring Black Nitrided Treatment! Supertech Extreme Flow Performance Valves for Pro Street and Racing are engineered for High RPM and High HP. Extreme Flow Valves outperform any other valve on the market today, and with their Nitride Coating are perfect for High Temperatures (and run cooler which improves value life), Nitrous, Turbos and Superchargers. For naturally aspirated motors these valves will give you a much greater cylinder flow for good HP gains.   Manufacturing/Description Intake and Exhaust Valves are One Piece Forged, High Temperature, High Nickel, Stainless Steel Alloy. Valves are CNC finished to strict tolerances making these valves the choice for the most demanding race classes.   ----------------------------------------------------------------------------   Three Types of Valves: (color coded in TYPE column for easy reference) #1) Black Nitride (Coating): Part # ending in "N" The micro-hardness is higher than the stainless steel base material, keeping good ductility beneath the hard nitrided layer (micro-hardness is 800HV minimum). Surface finish is smoother than with chromed stems, having less friction between stem and guide. --- Valve seat surface is harder with the nitrided layer, lasting longer with lead free fuels, alcohols, nitro or other "explosive" mixes. Matches any kind of seats (nodular iron seats, steel powder metal seats, hard aluminum-copper seats or beryllium copper seats). --- The higher the engine speed the bigger the power loss due to internal engine friction! The black nitride layer reduces this power loss due to less valve-guide friction. The nitrided layer is adhered to the base material at a microscopic level, so does not "flake" or brake when the valves bend due to impacts with the pistons. --- The Black Nitride applies to the whole valve while the chrome coating is only applied to the stem. All valves are swirl polished, have stem undercut and a hardened tip #2) Chrome (special coating used only as noted): Part # ending in "C" Widely used and known in high performance valves Only applied to stem. #3) Inconel (special valve material used only as noted): Part # ending in "I" Inconel 751/Nimonic - These Nickel based alloy materials are used for Exhaust valves in engines that reach very high temperatures and its use is growing with the application of turbos and superchargers.

Item INT or EXH Type (N,C,I) Description Price Per Valve Buy Now Acura/Honda HEVN-200F EXH N GSR/ B16A/18C  28x5.45x102.5mm/Chrome/ Stk. size/ Flat Face $12 Qty: HEVN-100F EXH N GSR/ B16A/18C  28x5.45x102.5mm/Chrome/ Stk. size/ Flat Face $14 Qty: HEVI-1000 EXH I B16A/18C Racing Valve 28 x 5.45 x 102.5 mm $20 Qty: HEVI-1001 EXH I B16A/18C Racing Valve 28.5 x 5.45 x 102.5 mm / (0.5mm Oversize) $20 Qty: HEVI-1006 EXH I H22  30.00x5.45x107.1mm/Tip 1.9mm/SS/stock size $26 Qty: HEVI-1020D EXH I RSX  30x5.45x108.65mm/ SS/stk. size $20 Qty: HEVI-1021D EXH I RSX / K20  30.50x5.45x108.65mm/ SS/+ 0.5mm/ Dish $20 Qty: HEVI-1030D EXH I K20/S2000/F20 - RSX/ K20  31x5.45x108.80mm/ Std size for S2000/+1mm for K20 $20 Qty: HEVI-1033D EXH I S2000/F20  31.50x5.45x108.80mm / 0.5mm++/ Dish $20 Qty: HEVI-NSX/C1 EXH I NSX Racing Valve 30.00 x 5.46 x 111 mm/ Chromed. $26 Qty: HEVN-NSX/C1 EXH N NSX Racing Valve 30.00 x 5.46 x 111 mm/ SS / Black Nitrided $14 Qty: HEVN-1000 EXH N GSR/ B16A/18C Racing Valve 28x5.45x102.5mm/SS/Blk.Nitrided/ Dish / Stk. size $14 Qty: HEVN-1001 EXH N B16A/18C Racing Valve 28.5 x 5.45 x 102.5 mm/ SS / Blk. Nitrided (0.5mm Oversize) $14 Qty: HEVN-1001/2D EXH N B16A/18C Racing Valve 29 x 5.45 x 102.5 mm /SS/ Blk. Nitrided /Dish / 1mm Oversize $15 Qty: HEVN-1001/2F EXH N B16A/18C Racing Valve 29 x 5.45 x 102.5 mm /SS/ Blk. Nitrided /Flat / 1mm Oversize $14 Qty: HEVN-1001F EXH N B16/18C Racing Valve 28.50x5.45x102.5mm/ No Dish/ SS/ Blk. Nitrided / 0.5 mm oversize $14 Qty: HEVN-1002 EXH N D16Z6  26.5x5.45x116mm / Tip 1.9mm/SS/ Blk. Nitrided/ 0.5mm Oversize. $14 Qty: HEVN-1003 EXH N D16A6/D15B Racing Valve 25x5.45x118.75mm / SS / Blk. Nitrided/ std. size $15 Qty: HEVN-1004 EXH N B18A/B Racing Valve 28.50x6.55x105.80mm / SS/ Blk. Nitrided/ 0.5 mm oversize $14 Qty: HEVN-1004/0 EXH N B18A/B  28.00x6.55x105.80mm / SS/ Blk. Nitrided/ Stk.size $14 Qty: HEVN-1005 EXH N ZC/D16A1  27.50x6.55x104.60mm / SS/ Blk.Nitrided/ 0.5++ $15 Qty: HEVN-1006 EXH N H22  30.00x5.45x106.45mm / Tip 1.9mm/ SS/ Blk. Nitrided/ stock size $15 Qty: HEVN-1006F EXH N H22  30.00x5.45x106.45mm / Tip 1.9mm/ SS/ Blk. Nitrided/ stock size/ Flat $15 Qty: HEVN-1007 EXH N H22 Racing Valve 30.5x5.45x106.45mm / Tip 1.9mm/ SS/ Blk. Nitrided / .5mm Oversize $15 Qty: HEVN-1008 EXH N H22  31x5.45x106.45mm / SS/ Blk. Nitrided/ + 1 mm $15 Qty: HEVN-1012 EXH N D16Z6  26x5.45x116mm / Tip 1.9mm/SS/ Blk. Nitrided/ stk. size. $14 Qty: HEVN-1020D EXH N RSX  30x5.45x108.65mm/ SS/Blk. Nitrided/stk. size. $15 Qty: HEVN-1020F EXH N RSX  30x5.45x108.65mm/ SS/Blk. Nitrided/stk. size/ Flat $15 Qty: HEVN-1021D EXH N RSX / K20  30.50x5.45x108.65mm/ SS/Blk. Nitrid./0.5++/ Dish. $15 Qty: HEVN-1021F EXH N RSX / K20  30.50x5.45x108.65mm/ SS/Blk. Nitrided/+ 0.5mm/ Flat $15 Qty: HEVN-1030D EXH N K20/S2000/F20 - RSX/ K20  31x5.45x108.80mm/SS/Blk. Nitrided/Std size for S2000/+1mm for K20 $16 Qty: HEVN-1030F EXH N K20/ S2000/F20  31x5.45x108.80mm/SS/Blk. Nitrided/Stk. size / Flat face (+1mm forK20) $16 Qty: HEVN-1033F EXH N S2000/F20  31.50x5.45x108.80mm/SS/Blk. Nitrided/0.5mm++/ Flat head $16 Qty: HEVN-1035D EXH N S2000/F20  32x5.45x108.80mm/SS/Blk. Nitrided/Dish/ 1mm++ $16 Qty: HEVN-1040D EXH N H23  29.00x6.546x102.7mm / SS/ Blk. Nitrided/ stock size. $16 Qty: HEVN-1042D EXH N H23  30.00x6.546x102.7mm / SS/ Blk. Nitrided/ + 1mm $16 Qty: HIVN-200F INT N GSR/ B16A/18C 33x5.48x102.5mm /Stk.size./ Flat Face $10 Qty: HIVN-100F INT N GSR/ B16A/18C 33x5.48x102.5mm /Stk.size./ Flat Face $15 Qty: HIVN-1000 INT N GSR/ B16A/18C Racing Valve 33x5.48x102.5mm /SS/Blk.Nitrided/Stk.size./Dish $15 Qty: HIVN-1000D INT N B16/18C 33.50x5.48x102.5mm / Dish / SS/Blk.Nitrided/ 0.5mm+ $15 Qty: HIVN-1000F INT N B16/18C Racing Valve 33.50x5.48x102.5mm / No Dish/SS/Blk.Nitrided/0.5mm oversize $15 Qty: HIVN-1001 INT N B16A/18C Racing Valve 34 x 5.48 x102.5 mm/ SS / Blk.Nitrided (1mm Oversize) $15 Qty: HIVN-1001F INT N B16A/18C Racing Valve 34 x 5.48 x 102.5 mm/ SS / Blk. Nitrided (1mm Oversize)/ Flat $15 Qty: HIVN-1002 INT N D16Z6 Racing Valve 30.5x5.48x118.5mm /SS/ Blk. Nitrid./ 0.5 mm ++ $15 Qty: HIVN-1003 INT N D16A6/D15B Racing Valve 29x5.48x115mm / SS / Blk. Nitrided/ Std. size $15 Qty: HIVN-1004 INT N B18A/B Racing Valve 31.50x6.57x105.40mm / SS/ Blk.Nitrided/ 0.5mm oversize. $15 Qty: HIVN-1004/0 INT N B18A/B 31.00x6.57x105.40mm / SS/ Blk.Nitrided/stk. size. $15 Qty: HIVN-1005 INT N ZC/D16A1 30.50x6.58x105.35mm / SS/ Blk.Nitrided/undercut/backcut/ 0.5++ $15 Qty: HIVN-1006 INT N H22 35.00x5.48x106.85mm / SS/Blk. Nitrided/stock size $15 Qty: HIVN-1006F INT N H22 35.00x5.48x106.85mm / SS/Blk. Nitrided/stock size/ Flat $15 Qty: HIVN-1007 INT N H22 Racing Valve 35.5x5.48x106.85mm / SS/Blk. Nitrided/ .5mm Oversize $15 Qty: HIVN-1008 INT N H22 36x5.48x106.85mm / SS/Blk. Nitrided/ + 1 mm $15 Qty: HIVN-1009 INT N H22 37x5.48x106.85mm / SS/Blk. Nitrided/+ 2 mm $15 Qty: HIVN-1012 INT N D16Z6 30x5.48x118.5mm /Tip 1.9mm/SS/ Blk. Nitrided / stk. size $15 Qty: HIVN-1020D INT N RSX 35x5.48x108.85mm/ SS/Blk. Nitrided/stk. size/Dish. $15 Qty: HIVN-1020F INT N RSX 35x5.48x108.85mm/ SS/Blk. Nitrided/stk. size/ Flat $15 Qty: HIVN-1021D INT N RSX / K20 35.50x5.48x108.85mm/SS/Blk. Nitrid./0.5++/ Dish $15 Qty: HIVN-1021F INT N RSX / K20 35.50x5.48x108.85mm/ SS/Blk. Nitrided/+0.5 mm/ Flat. $15 Qty: HIVN-1022D INT N RSX / K20 36x5.48x108.85mm/ SS/Blk. Nitrided/+1 mm/ Dish. $15 Qty: HIVN-1022F INT N RSX / K20 36x5.48x108.85mm/ SS/Blk. Nitrided/+1 mm/ Flat $15 Qty: HIVN-1023F INT N RSX / K20 37x5.48x108.85mm/ SS/Blk. Nitrided/+2 mm/ Flat $21 Qty: HIVN-1024F INT N RSX / K20 38x5.48x108.85mm/ SS/Blk. Nitrided/+3 mm/ Flat $21 Qty: HIVN-1030D INT N S2000/F20 36x5.48x109.85mm/SS/Blk. Nitrided/ Undercut / Back Cut 32 deg/ Dish / Stk. size $16 Qty: HIVN-1030F INT N S2000/F20 36x5.48x109.85mm/SS/Blk. Nitrided/ Undercut / Back Cut 32 deg/ Flat / Stk. size $16 Qty: HIVN-1033F INT N S2000/F20 36.50x5.48x109.85mm/SS/Blk. Nitrided/0.5mm ++ / Flat Head $16 Qty: HIVN-1035D INT N S2000/F20 37x5.48x109.85mm/SS/Blk. Nitrided/1mm++ $16 Qty: HIVN-1040D INT N H23 34.00x6.581x 103.50mm / SS/ Blk. Nitrided/ stock size. $16 Qty: HIVN-1042D INT N H23 35.00x6.581x 103.50mm / SS/ Blk. Nitrided/ + 1 mm $16 Qty: HIVN-NSX/1 INT N NSX Racing Valve 36.00 x 5.48 x 112.15 mm/ SS / Blk. Nitrided. $15 Qty:

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