JSR Engines

JSR Engines Dyno • Performance • Install🔧
Honda Builds From Mild To Wild⁣⁣
Fastest FK8s & CV2s in SoCal 🚗💨
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Engine Assembly
Balancing & Blue Printing
Block Main & Connecting Rod Mic'ing
Cam Degree Services for B,D,H,K,F Series Engines
Crank Polishing & Balancing
Cylinder Head Porting & Polishing
After Market Parts and Installation
Piston and Rod Packages
Engine Sleeving
Cylinder Head Rebuilds

The people asked and we shall provide. Wheel Horsepower is what they asked for so.. we are going to give it to them.Intr...
06/10/2026

The people asked and we shall provide. Wheel Horsepower is what they asked for so.. we are going to give it to them.

Introducing the MDR 700 Turbo. Garrett Gen II G25-700 Technology stuffed in an FK8/FL5/DE5/CV2 Stock Framed Housing.

FK8 has everything we can throw at this drop in dual ball bearing undercover Garrett turbo. Cams, Ultra Race ported head, JSR Elite FSU, 2000 injectors, 14V Supply/Return, PPG Trans, OSG HTR twin.

Basically we are going to throw everything at it and see what she does.

Stay Tuned 📺 For Data Next Friday 6/19

If anyone is interested in putting up a wager to test a vehicle here and at a local Dynojet the same day DM us, we have $500 that says we are within 1.2% variance at the highest. Come test your luck.

We are gone Racing!🏎️🏁We will be closed 5/29-5/31 all orders will be shipped out Monday the 31st and we will be getting ...
05/29/2026

We are gone Racing!🏎️🏁

We will be closed 5/29-5/31 all orders will be shipped out Monday the 31st and we will be getting back to emails and DMs when we return!

What’s up y’all. We are going to be doing a cruise to PCH Thursday Jan 1st.Meet up will be at JSR HQ at 11AM then headin...
12/16/2025

What’s up y’all. We are going to be doing a cruise to PCH Thursday Jan 1st.

Meet up will be at JSR HQ at 11AM then heading out at 12PM.

Route and end destination will be given the day of.

All cars welcome!

11/11/2025

Chase in his GTA FL5 around in just 1:52.

What a great event with great people, we cant wait to come back next year with a fresh set of 200TW tires this time.
































11/10/2025

Blasting off into the Weekend like...

We're out here for Finals!

Have a Great Weekend!

09/17/2025

with our JSR Stage I K20C1 Race Program Turning Up the packs.

628WHP/490WTQ

Rampage G30-770 34psi
JSR Ultimate Fuel System
XDI HPFP & 2K Injectors
JSR Ultra Race Intake Manifold
JSR Stage I Engine OEM Sleeve
JSR K20C1 Xtreme Duty 87mm Pistons
OEM Cylinder Head, No Port
OEM Camshafts
4 Piston 625+ Headstuds
JE Proseal Head Gasket
Golden Eagle Bore, Torque Plate Hone & Step Deck 003"
Balance & Blue Printed Assembly
ACL Race Bearing Kit with OEM Thrust
Wiseco Boostline Rods
Sunnen 3 angle Competition Valve Job
HKS FMIC with Charge Pipes
E50/91 Octane
Stock Trans
Clutch Masters FX400 8 Puck Clutch
No M**hanol
No Port Injection
No Race Gas
Pure Pump Gas ⛽️

09/11/2025

🚨 NEW PRODUCT ALERT 🚨

Drop in Honda K20C4 camshafts are available now for the 2018–2022 Honda Accord and Acura RDX!

Extensively tested here at we’re seeing 50+whp with 1psi less of boost thanks to Kelford’s new 379-EZ drop-in cams 🔧

These cams are in stock now and ready to ship! 📲 Contact us to order your set today.

Stock K20C4
Rampage G25-660
JSR PI KIT 1K Injectors
JSR Fuel/Return Supply System
FBO E50/91OCT
Pump Gas Only
No M**h Injection
No Race Gas
Single Gear Pull
No smoke and mirrors

430WHP/418WTQ OE Camshaft 30psi
480WHP/469WTQ EZ379 Camshafts 29psi

09/11/2025

We haven't posted in quite a while, but we're still here 🥱

Jesse's DE5 powered by 660AS and all the right bells and whistles 🤌

543WHP/465WHP

RV6-660AS Turbocharger
JSR Ultimate Fuel System
JSR Ultra Race Intake Manifold
Innovatig DP
Apexi Catback Exhaust
MDR FMIC with Charge Pipes
Hondata CF
Infinity Designs Carbon Intake system
E50/91 Octane
Stock Engine
Stock Trans
Stock Clutch
No M**hanol
No Port Injection
No Race Gas
Pump Gas Only ⛽️

05/17/2025

These skreets ain’t safe 👀

🇲🇽

05/06/2025

Our Shop DE5 that was supposed to stay "stock" with some conservative numbers on the dynapack 📈

520WHP/447WTQ

MHI Stage II Turbo 28psi
JSR Ultimate FSU
XDI Evo HPFP
JSR 1450cc Injectors
JSR V4. MHPFL
Carbon Induction Inlet/Intake
Pracworks Carbon Intake Manifold
RV6 FP/DP Combo
OEM Exhaust System
Hondata FP
Hondata CanFlex
E50/91Octane

Address

839 W Covina Boulevard
Covina, CA
91722

Opening Hours

Monday 10am - 7pm
Tuesday 10am - 7pm
Wednesday 10am - 7pm
Thursday 10am - 7pm
Friday 10am - 7pm
Saturday 10am - 7pm

Telephone

+16266254462

Website

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