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Engine Kits
- Stage 5 ZR Engine Kit
- ZR2 Billet Block (bore size between 2.717" - 2.736")
- ZR2 Billet head
- ZR2 Billet head gasket (0.015. 0.021, 0.027, 0.032, 0.042, 0.060)
- ZR Billet side cover
- 2-port ZR Billet breather
- JR 0.400 stroke Billet crankshaft
- Hardened crank gear
- 4.275" Billet connecting rod
- Dome piston with rings, wrist pin, and clips
- ZR Billet camshaft (0.436" lift)
- Dual valve springs
- 1.437" Stainless steel intake valve
- 1.160" Stainless steel exhaust valve
- Multi-angle valve job
- Full length bronze valve guides
- CNC ported intake and exhaust ports
- 21" 3-stage coated header
- Billet intake (hardware kit included)
- 33mm Mikuni carburetor with velocity stack
- Air filter
- 3° Billet adjustable coil bracket
- JR 3HP hot coil
- Billet 3HP flywheel
- Bosch spark plug
- Grooved billet starter nut
- Billet fuel pump bracket
- Walbro fuel pump
- 10' of fuel line
- Fuel filter
- Hardware Kit
ZR Stage 5 complete block kit, capable of running 9.10 with a 325-350 lbs. package at sea level.
Kit components:
- JR Race Car has an engine for any level of Junior Drag Racing... from the 12.90 Raptor-based motor all the way to Titan 3-3/4" bore motors. Review each engine's specifications to find which one meets your needs. Engine kits also available for Crew Chiefs who like to do their own engines.
Product LineJR Race Car Engines
BrandJR RACE CAR
Package Height6.0
Package Width16.0
Package Length16.0
Weight24.4 PG
Part CategoryPerformance Parts
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
