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  310 Power Valve Cylinder
 


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Our Price: $1,099.99
Sale Price: $699.00
You save $400.99!


HEAD COLOR

Color*: 		  
PORT JOB

  
SPACER PLATE KIT

  
EXHAUST FLANGE

  
DOME

  

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Description
 
****LONG ROD ENGINES 1987-1989 REQUIRES .190 SPACER PLATE ****
THIS KIT WILL WORK WITH STOCK REED BLOCK, EXHAUST FLANGE, AND CARB.

IF YOUR ENGINE HAS A STROKER CRANK, PLEASE CALL 805-489-1999 TO PLACE ORDER.  WE CAN CUSTOMIZE THE KIT FOR STROKES FROM 74mm TO 77mm.

THE ESR POWER VALVE CYLINDER IS MADE IN THE USA FROM CASTING TO FINAL HAND PORTING.  THE INTRODUCTION OF THE POWER VAVLE INTO THE CYLINDER GIVES THE ENGINE MORE LOW END POWER AND A MORE EVEN TORQUE CURVE THROUGHOUT THE POWERBAND.  THE POWER VALVE WILL GIVE YOU SIGNIFICANT DRIVE OUT OF THE CORNER, OR TOSS A MAJOR ROOST OUT IN THE DUNES.  THE POWER VALVE ACTUALLY CHANGES THE EXHAUST PORT TIMING AS THE ENGINE RPMS INCREASE USING EXHAUST PRESSURE TO RAISE THE POWER VALVE AND OPEN UP THE EXHAUST PORT FOR MAX FLOW AT THE HIGH RPM'S.  YOU CAN FEEL THE DIFFERENCE IN POWER DELIVER VS. THE NON POWER VALVE CYCLINDER THAT HITS HARDER AT THE TOP END WITH LESS BOTTOM END POWER.  THIS IS AN ALL NEW DESIGN OF THE PREVIOUS PRO X CYLINDER AND WE INCREASED THE VALVE TRAVEL IN THE NEW, CURRENT DESIGN FOR BETTER FLOW ON THE TOP END. 

****THIS KIT NOW COMES WITH THE ALL NEW ADJUSTABLE POWER VALVE WICH ENABLES THE RIDER TO MAKE THE VALVE OPEN AT ANY RPM FOR DIFFERENT RIDING CONDITIONS!!!!****

  • RX7 MX/Woods  (Low End)  The ESR TRx7 cylinder is our low-end power option. It exhibits plenty of low-end torque and mid-range power. An excellent choice for MX and Woods riders.   
  • TRX9 All-Around (Mid Range) Our TRX9 cylinder is for mid-range and top end power. this allows for terrific performance at higher RPM’s, without sacrificing low-end punch and ridability. Great for Duners or TT racers.   
  • TRX11 Drag Porting (Top End) The TRX11 is an extreme port job that takes top end performance to the next level! Ported for all out high revving power, this cylinder redefines “top-end performance”. This cylinder is for drag racing and hill shooting only.
FOR OPTIMUM PERFORMANCE, EDDIE RECOMMENDS A 38mm CARBURETOR AND EXHAUST PIPE

ALL KITS INCLUDE:

  1. 72mm BORE POWERVAVLE CYCLINDER
  2. ALL NEW ADJUSTABLE POWER VALVE!!
  3. BILLET CNC MACHINED HEAD
  4. REMOVABLE DOME (PUMP GAS OR RACE GAS OPTION)
  5. WISECO PISTON KIT
  6. TOP END GASKET KIT
  7. BILLET WATER NECK
  8. CUSTOM HAND PORTING!
**** 4 OVERSIZED PISTONS AVAILABLE 72.25mm,72.5mm,73mm,73.5mm
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HONDA TRX 250R 86-89 ATC 85/86