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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 Toyota/Scion TEVI-1016 EXH I Supra 2JZ Racing Valve 30x5.97x99.10mm / (1mm+) $23 Qty: TEVN-1007 EXH N Supra 7MGTE Racing Valve 28x5.97x98.20mm / SS  (0.5mm+) $15 Qty: TEVN-1011 EXH N MR2/3SGTE Valve 29.50x5.97x99.50mm/ SS/ + 0.5mm $15 Qty: TEVN-1015 EXH N Supra 2JZ Racing Valve 29.50x5.97x99.10mm / SS  (0.5mm+) $15 Qty: TEVN-1016 EXH N Supra 2JZ Racing Valve 30x5.97x99.10mm / SS  (1mm+) $15 Qty: TEVN-1018 EXH N 4AGE 20v Racing Valve 27.00x4.97x108.40mm / SS  / + 1mm $15 Qty: TEVN-1019 EXH N 4AGE 16v Racing Valve 25.50x5.97x99.75mm / SS  / std. size. $15 Qty: TEVN-1020 EXH N 4AGE 16v Atlantic Racing Valve 27.50x5.97x99.75mm / SS  (2.5mm+) $15 Qty: TEVN-1021 EXH N 1ZZ Valve 27.50 x 5.46 x 88.74 mm/ SS. $15 Qty: TEVN-1031 EXH N 2ZZ Valve 29 x 5.46 x 111.65 mm/ SS $16 Qty: TEVN-1035 EXH N Scion tc Valve 29.50 (std) x 5.46 x 101.20 mm/ EV8.. $20 Qty: TEVN-1040 EXH N V6 5VZ Racing Valve 27.50x5.97x94.90mm / SS EV16 $20 Qty: TEVN-1060 EXH N 2TC/ 3TC Valve 36x8x110mm/ SS/stk.size $17 Qty: TEVN-1063 EXH N 2TC/ 3TC Valve 39x8x110mm/ SS/   3mm++ $17 Qty: TEVN-1083D EXH N V8 UZ-FE series Valve 33.5(+1.5)mm x 6.97mm x 98.10mm / SS EV16/  Swirl polish/Dish $17 Qty: TEVN-1083F EXH N V8 UZ-FE series Valve 33.5(+1.5)mm x 6.97mm x 98.10mm / SS EV16/  Swirl polish/Flat $17 Qty: TIVN-1007 INT N Supra 7MGTE Racing Valve 32.50x5.98x98.10mm / SS  (0.5mm+) $15 Qty: TIVN-1011 INT N MR2/3SGTE Valve 34.00x5.98x100.50mm/ SS/ + 0.5mm $15 Qty: TIVN-1012 INT N MR2/3SGTE Valve 34.50x5.98x100.50mm/ SS/ + 1mm $15 Qty: TIVN-1015 INT N Supra 2JZ Racing Valve 34x5.98x98.55mm / SS  (0.5mm+) $15 Qty: TIVN-1016 INT N Supra 2JZ Racing Valve 34.50x5.98x98.55mm / SS  (1mm+) $15 Qty: TIVN-1018 INT N 4AGE 20v Racing Valve 27.50x4.95x98.60mm/ SS/ undercut/30 back-cut/ +1mm $15 Qty: TIVN-1019 INT N 4AGE16v Racing Valve 30.50x5.98x99.60mm/ SS /std size/undercut/30 back-cut $15 Qty: TIVN-1020 INT N 4AGE16v Atlantic Racing Valve 32x5.98x99.60mm/ SS (2mm+) $15 Qty: TIVN-1021 INT N 1ZZ Valve 32 x 5.48 x 88.67 mm/ SS./ Undercut/ Back cut. $16 Qty: TIVN-1031 INT N 2ZZ Valve 34 x 5.48 x 111.45 mm/ SS. / Undercut/ Back cut. $16 Qty: TIVN-1035 INT N Scion tc Valve 34 x 5.48 x 101.85 mm/ EV8/ Undercut/ Back cut/Dish. $20 Qty: TIVN-1040 INT N V6 5VZ Racing Valve 34(std) x 5.97x 95.15mm / SS EV8 / Undercut/back-cut. $20 Qty: TIVN-1060 INT N 2TC/ 3TC Valve 41x8x110mm/ SS/ Backcut/Undercut/stk. size $17 Qty: TIVN-1063 INT N 2TC/ 3TC Valve 44x8x110mm/ SS/ Backcut/Undercut/ 3mm++ $17 Qty: TIVN-1083D INT N V8 UZ-FE Valve 39.5(+1.5)mm x 6.97mm x 98.8mm /Backcut/Undercut/ Swirl polish/Dish $17 Qty: TIVN-1083F INT N V8 UZ-FE Valve 39.5(+1.5)mm x 6.97mm x 98.8mm /Backcut/Undercut/ Swirl polish/Flat $17 Qty:

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