Testimonials & Reviews

5.0
Based on 312 reviews
5 star
98
98%
4 star
2
2%
3 star
0%
2 star
0%
1 star
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1-10 of 312 reviews
  1. D

    Great!! Can definitely feel the difference.

    (0) (0)
  2. LR

    Great outfit
    Professional and a real homestyle touch

    Image #1 from Layton R.
    Image #2 from Layton R.
    (0) (0)
  3. BW

    Great parts, great people. Also bought the tsp and erm kit for my 21 300xc, no complaints.

    (0) (0)
  4. JM

    Spoke to Steve and told him I needed the part. He set it up on his day off. I got my kit on time for memorial weekend. Had a blast.Thanks Steve.

    (0) (0)
  5. CY

    Just purchased this kit for my 24 XC 300. Went with the High Comp Head and the Trail Tune. All I can say is WOW. I didn’t think my bike could get any better but boy was I wrong! Complete night and day difference. Cleaned up the bottom and mid range very nicely and the power throughout is just so smooth and the low end torque in 1st 2nd and 3rd gear is insane! This kit will unleash that beast that is inside the 300!! This kit is 100% worth the money. The performance gain with this kit will blow your mind. I also noticed that I used less fuel. Customer service is A+ as well with fast shipping. Had a quick question and I called them up and Steve was able to answer my questions without issue. I could go on and on about how good this kit is but my recommendation is to get and try it yourself. You wont be disappointed!! Thank you TSP and South Bay Moto you have made and absolute killer kit!
    Tech info….
    Riding elevation 2500 – 9000 ft
    Compression tested at 2800 ft – Stock Head – 185 psi
    – TSP High Comp head – 195 psi

    (1) (0)
  6. RC

    I have had a chance to ride my GasGas EC300 with the ERM and Medium head on many occasions now and am more than impressed with this combo. The ERM module and it options are easy to use. Steve answered my questions and I am very happy with his recommendation. Great service from South Bay! Thank R.C.

    (0) (0)
  7. RA

    Great guys and very helpful

    (0) (0)
  8. R

    2024 Husqvarna TE300i pro
    great stuff. Mixture is good now. Great fuel economy, increase in power!

    Image #1 from ROGER
    (0) (0)
  9. GS
    (0) (0)
  10. JS
    (0) (0)
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