2Bros Parts

86-85 CR250R BOYESEN RAD VALVE TRX250R, BLOCK RAD04A, RAD-04A, RAD-04A

$230.78

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Delivery to United States 5–8 business days

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Boyesen Rad Valve RAD-04A. Features carbon fiber reeds for increased performance. Maintains flow velocity and redirects intake charge for even distribution to intake ports, resulting in sharper, quicker throttle response and added torque for improved performance on hills, through corners, and over technical jumps. Increases horsepower in low, middle, and top-end ranges. One-piece aluminum casting requires no trimming or plastic inserts.

Specifications
SKU
05-R04A
Brand
Boyesen
Availability
In Stock (2)
General Product Group
Carburettor & Intake
General Product Type
Reeds - Valve
Variant Id
208725
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Boyesen Rad Valve Intake System

The Boyesen Rad Valve is engineered to significantly enhance your motorcycle's engine performance. This advanced intake system is designed to optimize the flow of the intake charge, ensuring more even distribution to the intake ports. This results in a sharper and quicker throttle response, providing a more connected feel between the rider and the machine.

Experience a noticeable increase in torque, which is crucial for tackling hills, navigating corners with confidence, and powering through technical jumps. The Boyesen Rad Valve is proven to boost horsepower across the entire RPM range, from low-end grunt to mid-range power and especially in the top-end.

Key Features:

  • Now delivered with premium carbon fiber reeds for enhanced performance gains.
  • Maintains optimal flow velocity through the valve.
  • Redirects intake charge for superior distribution to intake ports.
  • Delivers a sharper, quicker throttle response.
  • Adds torque, improving performance in various riding conditions.
  • Increases horsepower in low-, middle-, and top-end ranges.
  • Features a robust one-piece aluminum casting construction.
  • No trimming or plastic inserts are required for installation.
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

Call or email us with your make, model and year and we will check it for you before you order.

Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

More answers in our FAQ.

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