S3 Keihin Enduro Carb Adjuster Kit (Air & Idle Screws) for Beta, GasGas, Husqvarna, KTM, Rieju & Sherco (1992–2025) - (Silver)
Precision-made adjuster kit in silver from S3 for Keihin carburetors. Includes air and idle screws with stainless springs for micrometric tuning and long-term reliability. Anodized finish with laser-engraved S3 logo for a factory look.
| Brand: S3 |
| Color: Silver |
| Hardparts: RIEJU |
Internal Reference:
S3-BL-698-S
Product Information
The S3 Keihin Enduro Carb Adjuster Kit in Silver is designed to give riders precise control over air and idle adjustments on Keihin 2-stroke carburetors. Built from high-quality aluminum screws and stainless steel springs, this kit ensures accurate, micrometric tuning and lasting durability in demanding enduro conditions.
Each kit includes:
- 1 Air mix screw
- 1 Idle screw
- 1 Air mix spring
- 1 Idle spring
Key Features
- CNC-machined aluminum adjusters
- Micrometric tuning precision
- Factory anodized finish
- Includes all required springs
- Fits most 2-stroke Keihin carbs
Fitment
KTM
- EXC 125 (1992–2016)
- EXC 250 (1992–2016)
- EXC 300 (1992–2016)
- EXC SIX DAYS 125 (1992–2016)
- EXC SIX DAYS 250 (1992–2016)
- EXC SIX DAYS 300 (1992–2016)
- SX 125 (1992–2016)
- SX 250 (1992–2016)
- SX 300 (1992–2016)
- XC 125 (1992–2016)
- XC 250 (1992–2016)
- XC 300 (1992–2016)
GASGAS
- EC 125 (2001–2012)
- EC 250 (1996–2018)
- EC 300 (1996–2018)
BETA
- RR 250 (2018–current)
- RR 300 (2012–2015)
- RR RACE 250 (2018–current)
- RR RACE 300 (2012–2015)
- RR RACING 250 (2018–current)
- RR RACING 300 (2012–2015)
SHERCO
- SE 250 (2012–current)
- SE 300 (2012–current)
- SE-FACTORY 250 (2012–current)
- SE-FACTORY 300 (2012–current)
- SE-R-RACING 250 (2012–current)
- SE-R-RACING 300 (2012–current)
- SE-R-SIX DAYS 250 (2012–current)
- SE-R-SIX DAYS 300 (2012–current)
HUSQVARNA
- CR 125 (2000–2016)
- CR 250 (2000–2016)
- CR 300 (2000–2016)
- TC 125 (2000–2016)
- TC 250 (2000–2016)
- TC 300 (2000–2016)
- TE 125 (2000–2016)
- TE 250 (2000–2016)
- TE 300 (2000–2016)
- TX 125 (2000–2016)
- TX 250 (2000–2016)
- TX 300 (2000–2016)
- WR 125 (2000–2016)
- WR 250 (2000–2016)
- WR 300 (2000–2016)
RIEJU
- MR 250 (2019–current)
- MR 300 (2019–current)
- MR PRO 250 (2019–current)
- MR PRO 300 (2019–current)
- MR RACING 250 (2019–current)
- MR RACING 300 (2019–current)
Rider Questions
Q: Why would I need this kit if I already have screws on my carb?
A: Many stock screws are basic and hard to adjust with precision. Riders frequently mention needing finer control over pilot/air mixture and idle, especially when altitude, temperature or tuning changes.
Q: Is installation difficult? Will I need special tools?
A: No special tools are typically required. The kit replaces the stock idle and air‑mix screws, so you’ll need basic screwdrivers and possibly a torque setting for the idle screw. Just make sure you’ve measured thread depth, that the springs seat properly, and that you confirm baseline settings before riding.
Q: Will this kit improve my power delivery or throttle feel?
A: Indirectly yes — by giving you better control over mixture/idle, you can fine‑tune the carb for better throttle response, smoother idle, and improved control under varying conditions. It won’t replace jets, slide wear or seal issues, but it enhances the tuning range.
