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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 Available: (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 VALVES BMEVI-1030S EXH I M50/52 Single Groove 30.5x5.96x105.65mm/ SS/Stk.size $27 Qty: BMEVI-1031S EXH I M50/52 Single Groove 31.5x5.96x105.65mm/ SS/1+mm $27 Qty: BMEVI-1045S EXH I M3 S54/ 31.5(+1)x5.955x119.6mm/Single groove $28 Qty: BMEVN-1009 EXH N S14 32.5 x 6.95 x 126.11mm/ SS/ triple groove/flat. $18 Qty: BMEVN-1010 EXH N S14 33 x 6.95 x 126.11mm/ SS/ triple groove/Flat $18 Qty: BMEVI-1010 EXH I S14 33 x 6.95 x 126.11mm/ SS/ triple groove/Flat $23 Qty: BMEVN-1030 EXH N M50/52 30.5x5.96x105.65mm/ SS/Stk.size $17 Qty: BMEVN-1030S EXH N M50/52 Single Groove 30.5x5.96x105.65mm/ SS/Stk.size $17 Qty: BMEVN-1031 EXH N M50/52 31.5x5.96x105.65mm/ SS/1+mm $17 Qty: BMEVN-1031S EXH N M50/52 Single Groove 31.5x5.96x105.65mm/ SS/1+mm $17 Qty: BMEVN-1040 EXH N M3 S54/ 30.5x5.95x119.6mm/ SS/Stk.size $17 Qty: BMEVN-1045 EXH N M3 S54/ 31.5x5.955x119.6mm/ SS/ + 1mm $17 Qty: BMEVI-1006/L EXH I S14 32 (std) x 6.95 x 125.00mm/Tip 12.5mm/ Inconel / triple groove/ flat/swirl polish $19 Qty: BMIVIN-1006/L INT N S14 37(std)x 6.96 x 123.00mm/ Tip 11.5/ SS/Blk. Nitrided/undercut/ triple groove/flat $30 Qty: BMIVN-1008 INT N S14 38x 6.98 x 123.82mm/ SS/undercut/backcut/triple groove/flat. $18 Qty: BMIVN-1009 INT N S14 38.5 x 6.98 x 123.82mm/ SS/undercut/backcut/triple groove/flat. $18 Qty: BMIVN-1010 INT N S14 39 x 6.98 x 123.82mm/ SS/undercut/backcut/triple groove/flat. $18 Qty: BMIVN-1030 INT N M50/52 33x5.97x106.10mm/ SS/Stk.size $18 Qty: BMIVN-1030S INT N M50/52 Single Groove 33x5.97x106.10mm/ SS/Stk.size $18 Qty: BMIVN-1031 INT N M50/52 34x5.97x106.10mm/ SS/1+mm $18 Qty: BMIVN-1031S INT N M50/52 Single Groove 34x5.97x106.10mm/ SS/1+mm $18 Qty: BMIVN-1040 INT N M3 S54 35x5.97x117.50mm/ SS/Stk.size $18 Qty: BMIVN-1045 INT N M3 S54 36x5.97x117.50mm/ SS/ + 1mm $18 Qty:

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