Sur-Ron Primary Pulley / Carbon Fiber Belt / Gear Pulley Remover

The Best Ads Come From Our Customers

Youtube link: click here

COMPATIBILITY

VEHICLE MODEL

THICKNESS

• The large pulley is approximately 21.92mm.
• The small pulley is approximately 23.87mm
• The belt is approximately 19mm. （stock belt. 16mm）

GEAR REMOVER

Full Set (3-Piece): Including pulley tools and chain drive tools

- Pulley Tool (Yellow mark): Matches original pulley gear ratios

  NOTE: Not compatible with this small pulley (with diagram)  This pulley design has an added outer wall that prevents standard tools from fitting over it.

- Chain Drive Tool (Red mark): Compatible with 2.3 and 2.5 gear ratios

COMPATIBLE MOTOR

• The stock motor
• Not suitable for KO motor (Please note this issue. After-sales will not be responsible for this issue.)

BELT UPGRADED

Optimized Width carbon fiber belt with genuine carbon fiber material for superior strength & perfect compatibility. The ultimate upgrade over GT4 model and perfect pairing for our stainless steel pulley.

✅ Genuine Carbon Fiber Construction - Significant upgrade over GT4! Unlike GT4's non-carbon fiber material, we use authentic carbon fiber composite with hydrogenated nitrile rubber (HNBR) for exceptional durability and the highest strength-to-weight ratio.

✅ 62% Stronger Than OEM - Features industry-leading material combination of carbon fiber and HNBR rubber. Withstands extreme race conditions and highly modified power setups while maintaining perfect reliability.

✅ 19mm Optimized Width - Upgraded from OEM/GT4 16mm to 19mm width for enhanced strength and perfect pulley alignment. The increased width provides better durability and is ideal for high-power modified setups.

✅ Same Tooth Count as OEM - Maintains original tooth profile for direct replacement installation. Fully compatible with stock pulleys, but for optimal performance we recommend pairing with our hardened stainless steel pulley to prevent accelerated wear from carbon fiber's higher hardness.

PULLEY UPGRADED

Advanced stainless steel construction for extreme lightness & maximum durability. A perfect match for our carbon fiber belt.

✅ ~50% Lighter Than OEM – Weighs only 440g (lighter than two iPhone 16 Pro Max phones)! Drastically reduces weight for enhanced performance.

✅ Carbon Fiber Compatible Stainless Pulley – Specifically engineered for carbon fiber belts. Our high-hardness stainless steel pulley prevents accelerated wear caused by carbon belts on softer OEM pulleys, ensuring perfect hardness matching for optimal performance and extended lifespan.

✅ Oversized Mud-Shedding Design – Features significantly enlarged mud ports on both pulleys. Our maximized design ensures better mud clearance than standard pulleys, dramatically reducing cleaning maintenance and delivering smoother operation in all conditions.

INSTALLATON

Gear Remove: here  (The tool is on sale.)

USAGE RECOMMENDATIONS

If the power of your vehicle has increased and the carbon fiber belt has been upgraded, it is strongly recommended to use our carbon fiber belt and the belt pulley with the sand discharge function in combination.

1. 1. The power has been upgraded, but the belt and belt pulley have not been replaced:
      The wear on the original belt and belt pulley is greater, the belt is prone to breakage, and the belt pulley is prone to tip wear;
      👍It is recommended to replace our carbon fiber belt and our pulley with higher strength.
   2. Only the carbon fiber belt has been replaced:
      Because the carbon fiber belt is harder, the wear on the original pulley is greater.
      👍It is recommended to replace our pulley suitable for the carbon fiber belt.
   3. Other ordinary belt pulleys have been replaced:
      Due to the absence of the sand discharge hole design, sediment often accumulates and cannot be discharged.
      🔥 It is recommended to replace our pulley with the highly difficult tooth surface hollowed-out sand discharge hole design! Paired with our carbon fiber belt, the overall service life is improved!

BOX INCLUDED

Option 'Belt': 
1 x Primary Carbon Fiber Belt

Option 'Pulley': 
- 1 x Front Primary Belt Drive Pulley
- 1 x Rear Primary Belt Drive Pulley

Option 'Gear Remover':
- Full Set (3-Piece): 3 x tools
- Chain Drive Tool: 1 x Chain Drive Tool
- Pulley Tool: 1 x Pulley Tool

SHIPPING

15‑Day Price Guarantee
If you find the exact same product (model, color, specs) at a lower total price (including shipping) within 15 days of your order, we’ll refund the difference.

Disclaimer
Modifications carry risks. We are not liable for damages, injuries, or safety issues related to this product.

Color Variation Disclaimer
Colors may vary slightly due to photography and screen settings.