2Bros Parts

1999 YZ250 BOY.RAD VALVE RAD-34E

$229.56Only 1 left

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Delivery to United States 5–8 business days

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Boyesen Rad Valve RAD-34E with carbon fiber reeds. Maintains flow velocity through the valve and redirects intake charge for more even distribution to intake ports. Delivers sharper, quicker throttle response, added torque for improved performance on hills, through corners, and over technical jumps. Increases horsepower in low, middle, and top-end ranges. Features a one-piece aluminum casting; no trimming or plastic inserts required.

Specifications
SKU
05-R34E
Brand
Boyesen
Availability
In Stock (1)

Fitments (2)

MakeModelYear
YAMAHAYZ 1252000
YAMAHAYZ 2501999
General Product Group
Carburettor & Intake
General Product Type
Reeds - Valve
Variant Id
208788
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Boyesen RAD Valve with Carbon Fiber Reeds

The Boyesen RAD Valve is engineered to significantly enhance your motorcycle's performance. This advanced intake reed valve system is designed to optimize the flow and distribution of the intake charge to your engine's ports, resulting in noticeable improvements across the entire RPM range.

  • Enhanced Performance: Now delivered with premium carbon fiber reeds for maximum performance gains.
  • Optimized Flow Velocity: Maintains high flow velocity through the valve and redirects the intake charge for more even distribution to the intake ports.
  • Sharper Throttle Response: Experience a quicker and more responsive throttle, allowing for precise control.
  • Increased Torque: Benefit from improved torque, which is crucial for tackling hills, navigating corners, and handling technical jumps.
  • Broadened Horsepower: Achieve increased horsepower across low-, middle-, and especially the top-end power bands.
  • Durable Construction: Features a robust one-piece aluminum casting, eliminating the need for trimming or plastic inserts.
Before you buy

QUESTIONS? JUST ASK

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

Check the fitment table on this page against your make, model and year. Not sure? Call or email us 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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