--- product_id: 344575525 title: "NICECNC Air/Fuel Mixture Screw Adjuster for MIKUNI BSR BS CVR CV Carburetor Compatible with Suzuki DRZ400S DRZ400SM,Gold" brand: "nicecnc" price: "KD 10.60" currency: KWD in_stock: true reviews_count: 5 category: "Nicecnc" url: https://www.desertcart.com.kw/products/344575525-nicecnc-air-fuel-mixture-screw-adjuster-for-mikuni-bsr-bs store_origin: KW region: Kuwait --- # Tool-Free Quick Adjustment 6061-T6 Aluminum CNC Machined O-ring Secured Settings NICECNC Air/Fuel Mixture Screw Adjuster for MIKUNI BSR BS CVR CV Carburetor Compatible with Suzuki DRZ400S DRZ400SM,Gold **Brand:** nicecnc **Price:** KD 10.60 **Availability:** ✅ In Stock ## Summary > 🔥 Tune Like a Pro, Ride Like a Legend ⚙️ ## Quick Answers - **What is this?** NICECNC Air/Fuel Mixture Screw Adjuster for MIKUNI BSR BS CVR CV Carburetor Compatible with Suzuki DRZ400S DRZ400SM,Gold by nicecnc - **How much does it cost?** KD 10.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/344575525-nicecnc-air-fuel-mixture-screw-adjuster-for-mikuni-bsr-bs) ## Best For - nicecnc enthusiasts ## Why This Product - Trusted nicecnc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Anodized Gold Finish:** Stylish corrosion-resistant coating that stands out and lasts through rugged conditions. - • **Secure O-ring Design:** Keeps your settings locked in place, preventing unwanted changes during rides. - • **Effortless On-the-Fly Tuning:** Adjust your air/fuel mixture quickly without any tools—perfect for track or trail tweaks. - • **Precision CNC Machined Aluminum:** Durable 6061-T6 aluminum ensures long-lasting performance and premium finish. - • **Perfect Fit for Suzuki DRZ400 Series:** Specifically engineered for Mikuni BSR/BS CVR CV carburetors on DRZ400S and DRZ400SM models. ## Overview The NICECNC Air/Fuel Mixture Screw Adjuster is a precision CNC-machined aftermarket part crafted from durable 6061-T6 aluminum with an anodized gold finish. Designed for Mikuni carburetors on Suzuki DRZ400S and DRZ400SM dirt bikes, it enables quick, tool-free air/fuel mixture adjustments secured by an O-ring to maintain your perfect idle setting. Highly rated and a top choice for riders seeking reliable, on-the-fly tuning with a sleek, corrosion-resistant upgrade. ## Description ✿ Allows for quick,easy adjustment with no tools needed to adjust on the track or trail. ☞ Description Made From High Quality 6061-T6 Aluminum Precision CNC Machined Screw O-ring Design Secures Adjustment Setting Anodized Finishing Makes Adjustments So Much Easier ☞ Reference Fitment:S-uzuki ✔ DRZ400S ✔ DRZ400SM Review: Worked perfect on my 2001 DRZ400S with the Mikuni carb. Previous owner lost the spring, washers and o-ring, giving me an erratic idle. For the cost of just they parts from the dealer, I now have an easy adjustment screw. Must have for any DRZ Review: This MICECNC Fuel Screw (or "Idle Screw") worked great in my 2014 Suzuki DR650 stock Mikuni BST40 carb. It included the tiny washer & o-ring, it installed easily & protruded below the carb enough to easily adjust ide mixture. There's none of these available elsewhere on desertcart for the BST 40, so for $20 they're a great value. Fyi, my '14 DR650 with stock BST40 carb, air filter (snorkel removed) & 42.5 pilot jet only needed @2.25-2.5 turns out for a perfect idle. Fyi, this screw's tip 'taper' is slightly more pointy than the stock idle screw, but it doesn't matter in it's function, I only wish the threads fit a little more tightly/more thread tension into my BST carb, but otherwise it works perfectly for the Mikuni BST 40 carb. ## Features - ♥♥ Condition: 100% Brand New AFTERMARKET PARTS - ♥♥ Type:Air Fuel Mixture Screw - ♥♥ Material:6061-T6 Aluminum - ♥♥ Surface Finish:CNC Machined - ♥♥ Package includes：1 x Fuel Screw ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07LF69WVL | | Best Sellers Rank | #116,748 in Automotive ( See Top 100 in Automotive ) #9 in Motorcycle Fuel Supply Nuts & Bolts | | Brand Name | NICECNC | | Compatible with Vehicle Type | Dirt Bike | | Customer Reviews | 4.5 4.5 out of 5 stars (233) | | Exterior Finish | Aluminum | | Flange Type | Bolt On | | Fuel Type | Gasoline | | Manufacturer | NICECNC | | Model Number | NICECNC-FMS002 | | Specific Uses For Product | Suzuki | ## Product Details - **Brand:** NICECNC - **Flange type:** Bolt On - **Fuel type:** Gasoline - **Specific uses for product:** Suzuki - **Vehicle service type:** Dirt Bike ## Images ![NICECNC Air/Fuel Mixture Screw Adjuster for MIKUNI BSR BS CVR CV Carburetor Compatible with Suzuki DRZ400S DRZ400SM,Gold - Image 1](https://m.media-amazon.com/images/I/61J1P468xPL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on 23 January 2026* Worked perfect on my 2001 DRZ400S with the Mikuni carb. Previous owner lost the spring, washers and o-ring, giving me an erratic idle. For the cost of just they parts from the dealer, I now have an easy adjustment screw. Must have for any DRZ ### ⭐⭐⭐⭐⭐ Review *by D***R on 2 January 2023* This MICECNC Fuel Screw (or "Idle Screw") worked great in my 2014 Suzuki DR650 stock Mikuni BST40 carb. It included the tiny washer & o-ring, it installed easily & protruded below the carb enough to easily adjust ide mixture. There's none of these available elsewhere on Amazon for the BST 40, so for $20 they're a great value. Fyi, my '14 DR650 with stock BST40 carb, air filter (snorkel removed) & 42.5 pilot jet only needed @2.25-2.5 turns out for a perfect idle. Fyi, this screw's tip 'taper' is slightly more pointy than the stock idle screw, but it doesn't matter in it's function, I only wish the threads fit a little more tightly/more thread tension into my BST carb, but otherwise it works perfectly for the Mikuni BST 40 carb. ### ⭐⭐⭐⭐ Review *by A***L on 3 January 2025* This works great and it's much easier to dial in my carburetor compared to trying to get a screwdriver or flathead bit in there. My only problem is that when it was adjusted to the same setting as the old fuel screw, it was a bit wobbly. I worried that it would vibrate out on a ride and be lost, so I had to turn it in a bit more for it to be secured. Maybe a small bit of plumber's tape would secure it? ## Frequently Bought Together - NICECNC Gold Extended Fuel Screw Air Mixture Carb Air Carburetor Aluminum Compatible with Suzuki DRZ400S 2000-2022 DRZ400SM 2000-2022 Replace Adjuster Part 13279-33E00,See Fitment - JDJetting 00-19 Suzuki Drz400S: Jd Jetting Jet Kit (JDS005) - K&N Engine Air Filter: High Performance, Premium, Powersport Air Filter: Fits 2000-2019 SUZUKI/KAWASAKI (DRZ400S, DRZ400SM, DRZ400E, DRZ400, KLX400R, KLX400SR) SU-4000 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.kw/products/344575525-nicecnc-air-fuel-mixture-screw-adjuster-for-mikuni-bsr-bs](https://www.desertcart.com.kw/products/344575525-nicecnc-air-fuel-mixture-screw-adjuster-for-mikuni-bsr-bs) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-19*