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Exclusive Dealer for
South Bay Moto Performance is proud to be the exclusive distributor for allLearn More
Two Stroke Performance products sold in the US and Mexico. -
SouthBayMOTOPerformance
TWO STROKEWe provide the best tune and set up for two strokeShop Now!
motorcycles to maximize performance while maintaining
reliability for both competitive racers and trail
enthusiast of all skill levels. -
TWO STROKE PASSION
PERFORMANCEToday's modern machines need modern solutions.SHOP NOW!
Let South Bay Moto Performance help you go fast and stay strong on the trails.
-
Exclusive Dealer for
South Bay Moto Performance is proud to be the exclusive distributor for allLearn More
Two Stroke Performance products sold in the US and Mexico.
South Bay Moto Performance is proud to be the exclusive distributor for all Two Stroke Performance products sold in the US and Mexico.
Specializing in off road motorcycle, two-stroke performance parts:
- CNC Billet Cylinder Heads – multiple options designed for specific rider preference
- TPI Power Kits and Carb Power Kits – all parts designed and matched to provide the ultimate performance upgrade for each individual bike and rider
- Performance Parts – the parts you need for your KTM, Husky, and Gas Gas TPI and Carb bikes
WHAT DO YOU RIDE?
NEW PRODUCT SHOWCASE
SOUTH BAY MOTO PERFORMANCE SHOP
Track and Trail Tested Performance Upgrades!
Check out these videos to see how the TSP performance upgrades from SB Moto Performance hold up on the track and trails. See all of our videos here.
Kris Keefer and the guys at Racer X discuss and test the garage build of a 2021 KTM 300 XC TPI.
Dirt Bike Test rides RPM Racing KTM team rider Kaitlyn Jacobs’ 2022 KTM 150SX with motor mods tuned by TSP and SBMP.


Performance and reliability for all skill levels!
We are dedicated offroad riders. We understand the importance of not only going fast, but also keeping our motorcycles running in top condition. Nobody wants to spend a weekend at the trailhead wrenching on their equipment. Let us help you select the perfect parts to keep your two stroke running at peak performance!
2018 KTM 300cc XCW Carb and Head Review
This could get expensive!!


He placed 5th overall in the 250 beginners class. In reality he was 2nd. 1-3 were sandbagging the class They rode several levels up also and played towards the top. He’s beyond happy with how his bike is running. Absolutely ripping. He was pulling on 250f’s. Once we get the photos back he’s going to do a full review on the TPI page and tag you guys and TSP. This could get expensive!! Thanks again.
Second hand Bike???
The Husqvarna has no paperwork with it Except the registration documents. IT has a Performance Ecu And Head installed. I have taken the bike apart for inspection before I ride it. Sent the information to Steve regarding the identification of the head. He has spent time and effort to tell me the type installed on the bike and its a medium compression. I am thanking them for the super fast response for the information as I did not buy the parts from them. But I will be back.
Major Improvement
Installed the low compression head and ecu flash. Tremendous improvement. The power is incredibly smooth on my 250. Before the flash and head, the power would surge a lot. Best improvement I’ve made to my bike.
That is the Best Customer Service
I just wanted to let you know I really appreciate your time helping me out with my TPI sensor. That is the best customer service I’ve had in a long time! Thanks again – you’re a good man!!!
2020 Husqvarna TE 300-i
I installed the ECU and new head and it made the power phenomenal compared to stock.
Follow-up on Fine Tuning My Bike
I just wanted to follow-up on all of your latest recommendations for fine tuning my bike: Rekluse: Set Bevel Spring to #3 (stiffest setting) and set to Low Engagement Installed Idle screw and set to 600MV Bike runs even better and no more stalling issues. Thank you again for all of your time and advice.


Three of these Huskies have your products installed! At the creek at Georgetown!
2021 GasGas EX300 South Bay Moto Performance/TSP Power Kit First Ride
2021 GasGas EX300 South Bay Moto Performance/TSP Power Kit First Ride
I warmed the bike up and took it for a quick test/setup ride. You were right, the difference was immediately noticeable! Better pull from down low and a MUCH smoother transition into the mid-range. Now I can easily do low speed balance point wheelies and not worry about getting hit with that sudden mid-range surge that was there before (when I would occasionally get up into the rpm’s a bit). So much easier to control (and safer) and it sounds much better now too! Like it’s crisp and well-tuned. I played with the air screw settings as suggested in the kit but ended up with it back at its original position of 3.5 turns out. That’s where it seemed to run best off idle and at low throttle settings; maybe it’s because I’m at about 4750 feet above sea level here. I couldn’t tell any real difference between air screw settings at higher throttle openings. The idle speed at this air screw setting was basically perfect at about 1470 rpm, so I haven’t installed the idle screw modification yet. We’ll see if I decide I want/need to install it after running at other elevations, but the stock idle setting seems fine for here so far.
Anyway, I’m super happy with the kit so far and can’t wait to get it out into some terrain for a more thorough impression in varied conditions.
Read more “2021 GasGas EX300 South Bay Moto Performance/TSP Power Kit First Ride”
Super pumped for the upcoming race season.
Great Kit, Great Setup! Thanks Again!
I’ll be sending more customers your way as soon as they get to try my bike … Even though it’s sled season I’ve been going out and riding my bike a lot!