Brian Tooley Racing

BTR LT1 THERMOSTAT HOUSING

BTR's LT1 thermostat housing is made out of sand cast aluminum and replaces the OEM plastic housing with the mold in-place thermostat. This aluminum housing accepts an LS3 thermostat and connects to...

BTR TI-17 RETAINER SET - SR532-16

BTR TI-17 RETAINER - FOR SK427, SK1237, SK1238, SK016 and SK015 SOLID ROLLER KITS - SET OF 16 - SR532-16 BTR Titanium Retainer Kit, for use with PAC 1237X, 1238X, 1335, 1529 and 1530 springs. These...

BTR DROP-IN TITANIUM RETAINER SET - BEEHIVE - LS7/LS9/GEN V LT1 - SR010-16

BTR DROP-IN TITANIUM RETAINER SET - BEEHIVE - LS7/LS9/GEN V LT4 INTAKE - SR010-16 BTR built its reputation on the back of valvetrain design and innovation. Our retainers are available in steel or...

BTR TITANIUM RETAINER SET - LS - 11/32" - SR004-16

BTR TITANIUM RETAINER SET FOR 11/32" VALVES - SR004-16 BTR built its reputation on the back of valvetrain design and innovation. Our retainers are available in steel or titanium for numerous...

BTR DRAG RACE SPRINGS - 1.000" LIFT - SP449-16

BTR DRAG RACE SPRINGS - 1.000" LIFT - SP449-16 BTR’s Triple Valve Spring for Drag Race Applications is the biggest, baddest spring we offer, bar none! This spring will support up to a whopping 1...

MOPAR 5.7L .625 LIFT VALVE SPRING

MOPAR .650 LIFT TRUCK SPRING KIT

BTR DROP-IN VALVE SPRINGS 2009+ 5.7 HEMI LIKE 68277306AA - .625 LIFT - 16PC KIT - SP021-16 Got a 2009+ 5.7 HEMI and need more valve spring, but want to keep your OEM hardware and save some money?...

GEN V CONICAL SPRING SET OF 16

BTR LTx CONICAL SPRING KIT - .650" LIFT - SP014-16 BTR GEN V conical valve spring set of 16. 160 LB SEAT @ 1.875" INSTALL HEIGHT 395 LB OPEN @ 1.225" COIL BIND @ 1.165" Uses stock retainers, locks...

BTR .560" LS6 BEEHIVE VALVE SPRING SET - SP011-16

BTR .560" LS6 BEEHIVE VALVE SPRING SET - SP011-16 BTR's .560" lift LS6-style valve springs gives you all of the performance of the venerable OEM LS6 valve spring (GM part # 12499224 or 12586484) at a...

BTR DUAL SPRING SET - .685" LIFT - SP010-16

BTR DUAL SPRING SET - .685" LIFT - SP010-16 BTR’s .685” lift springs are for serious hydraulic roller motors that will make a living in the northern areas of the RPM range. • 170 lbs @ 1.800”...

BTR ULTIMATE RPM SPRING KIT - .650" LIFT - SK703

BTR LS7 DUAL SPRING KIT - .685" LIFT - SK702

BTR LS7 DUAL SPRING KIT - .685" LIFT - SK702 When you decide to take a walk on the wild side and exceed the .660” limit of our venerable Platinum Spring Kit, the next step is our .685” Spring Kit...

BTR SK427 SPRING KIT - SOLID ROLLER LSx - SK427/560

BTR SK427 SPRING KIT - SOLID ROLLER LSx - SK427/560 When you take the plunge into a solid roller combination, taking the guesswork out of the valvetrain combination is a huge relief. For that reason,...

BTR SK427 SPRING KIT - SOLID ROLLER LSx - SK427/500

BTR SK427 SPRING KIT - SOLID ROLLER LSx - SK427/500 When you take the plunge into a solid roller combination, taking the guesswork out of the valvetrain combination is a huge relief. For that reason,...

BTR SPRING KIT - SOLID ROLLER - BTRXP1238

BTR SPRING KIT - SOLID ROLLER - BTRXP1237

BTR .630" LIFT VALVE SPRING KIT LT4

BTR LT1 .630" LIFT VALVE SPRING KIT BRONZE GUIDES

BTR .645" LIFT LT1 VALVE SPRING KIT BRONZE GUIDES

BTR LT1 .630" LIFT VALVE SPRING KIT

BTR LT4 CONICAL SPRING KIT - .650" - SK014

BTR LT4 CONICAL SPRING KIT - .650" - SK014 We were first to market with a conical valve spring kit for Gen V LT4s. Big whoop, right? WRONG. Weight is the enemy of a proper functioning valvetrain. If...

BTR LTX CONICAL SPRING KIT FOR BRONZE VALVE GUIDES

BTR GEN V LT CONICAL SPRING KIT FOR BRONZE VALVE GUIDES - .650" LIFT - SK013/6545 We were first to market with a conical valve spring kit for Gen V LT engines. If your cam isn't too radical, a dual...

BTR LT1/L86 CONICAL SPRING KIT - .650" LIFT - SK013

BTR GEN V LT CONICAL SPRING KIT - .650" LIFT - SK013 BTR was the first to market with a conical valve spring kit for Gen V LT engines, and we've been dialing in the formula for a long time to bring...

.660" Lift BTR Gen V LT1 Spring Kit; Titanium Ret., .505" ID .045" Thick Loc., Black/Brown Seals

BTR GEN V LT1 PLATINUM DUAL SPRING KIT - .660" LIFT - SK007/0545/BB The BTR Platinum Spring Kit would be inducted into the LS Aftermarket Hall of Fame if such a thing existed. Whether you’re...