Downshift L.A.

Downshift L.A.

Share

Your premier motorsports destination. Located in Torrance and serving the L.A. area. Now Open!

06/14/2026

FINALLY!

So this one has baffled me for quite some time. I had to replace the wiring harness and reg/rec as it was hacked up and destroyed the RR. Thought this was job done. NOPE!

Did that and now it was overcharging! Started the investigation and found that the black sensor wire had a huge voltage drop when I had the lighting on. Even when it was off, it wasn't enough voltage to that wire which would cause the reg/rec to overcompensate and hike the voltage to over 15.87 volts! Way too much.

I did all kinds of checks, resistance, volts, continuity.... Everything was checking out. I started to deep dive with a general search online about current draw in the lighting systems. And one, literally one topic out of tons had a guy that said he had a problem with his headlight bulb. HEADLIGHT BULB?!?

Well, I was at my wits end and figured, what else could it be??

And guess what? Replaced the bulb and BOOM! That fixed it!! And the old H4 bulb was brand new and working!! Albeit, from Amazon...

Moral of the story? Sometimes you have to dumb yourself down and look at the stupidest, most unlikely suspect.

06/13/2026

Sounds so good!

Hans brought in his Ducati Monster S2R for some much needed love. And love it got!

New cam belts, hydro flush, clutch slave cylinder, injector cleaning, electrical check, tank repaint, and chain cleaning/adjustment.

The result? Spectacular riding machine!

06/12/2026

Even when it's dirty, the MV Augusta Brutale Dragster is a HOT 🔥🔥 bike!

06/10/2026

Out sick. This flu is kicking my arse. I haven't been sick in a looong time.

Almost forgot what it's like. I don't like it.

I'll be back tomorrow at 10am. Whether I have to heavily medicate or not. Hopefully not...

06/06/2026

Synching the throttle bodies on this 2005 Monster

05/31/2026

FOR SALE! STUPID LOW MILES! ITS LIKE NEW!

Message for more details.

05/25/2026

This has been a bit of a challenge. 🤔

Brian bought this bike from an auction earlier this year. It was a non-runner. But the previous owner said it ran when parked. Have you ever heard this one before?!? 🧐

As you can hear in the reel, I am close to getting this FZR400RR to purrr like a kitten. The sync is now spot on, but I need to play with the jetting to get it just right.

Photos from Downshift L.A.'s post 05/24/2026

Today, we pause to express our deepest gratitude to the men and women who made the ultimate sacrifice. Wishing you and your family a peaceful and blessed Memorial Day weekend.

05/22/2026

Carb sync time. 😎

About to fire up Brian's FZR400 RR SP for the first time! Lets gooo!

05/18/2026

Dynamic timing.

This is a PMA (permanent magnet alternator) system I installed on a Yamaha XS650. The reel shows the timing mark I made before installing the system. The timing light allows me to see where Ive set the timing. And this system allows for adjustments. I can visually see where its re****ed or advanced.

Want your business to be the top-listed Autos & Automotive Service in Torrance?
Click here to claim your Sponsored Listing.

Address


22628 South Normandie Avenue Unit A
Torrance, CA
90502

Opening Hours

Tuesday 10am - 5pm
Wednesday 10am - 5pm
Thursday 10am - 5pm
Friday 10am - 5pm
Saturday 10am - 3pm