2Bros Parts

BRC KTM 500cc 07-16 250/300 CONVERSION KIT, BOLT IN

$8,559.52

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Delivery to United States 5–8 business days

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BRC 500cc 250/300 conversion kit, bolt in. Features 60+ HP, 50+ Ft Lbs torque with a simple pneumatic power valve system for linear, smooth power delivery. Accepts your donor 5- or 6-speed transmission. Compatible with kick start and electric start, includes a decomp button for easier starting. Kit includes a pipe and silencer. Integral counter balance shaft cancels out vibrations. Uses stock 36 or 38mm carburetor. Specifications: Bore 89mm, Stroke 82mm, Displacement 510cc, Compression Ratio 12.5:1, Squish 1.47-2.00mm, Primary Ratio 2.25 (72:32). Due to value, ships on a pallet. No warranty implied or given. Ensure all parts are correct before assembly. Some modifications may be required for mounts, exhaust, or other parts due to US-EU model differences. A waiver confirming agreement to the above terms is required before dispatch.

Specifications
SKU
BRC-KTM500_07-16
Brand
BRC Canada
Availability
In Stock (2)
General Product Type
Conversion Kit
General Size
500cc
Variant Id
312697
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

BRC 500cc 250/300 Conversion Kit - Bolt In

Transform your 250cc or 300cc motorcycle into a powerful 510cc machine with the BRC 500cc Conversion Kit. This bolt-in kit delivers exhilarating performance, pushing power output to over 60 horsepower and 50 ft-lbs of torque.

Engineered for enhanced rider experience, the kit features a simple pneumatic power valve system for smooth, linear power delivery. It seamlessly integrates with your existing 5 or 6-speed transmission and supports both kick start and electric start configurations. A decompression button is included to ease starting. The kit comes complete with a dedicated pipe and silencer for optimal exhaust performance.

Experience a refined ride thanks to the integral counterbalance shaft, designed to significantly reduce vibrations. Contrary to common assumptions, the kit is optimized to work with your stock 36mm or 38mm carburetor for the best results.

Key Features:

  • Massive Performance Boost: Achieve 510cc displacement, generating 60+ HP and 50+ Ft Lbs of torque.
  • Smooth Power Delivery: Features a simple, pneumatic power valve system.
  • Transmission Compatibility: Utilizes your donor 5 or 6-speed transmission.
  • Starting Options: Compatible with both kick start and electric start, includes a decomp button for easier starting.
  • Complete Exhaust System: Includes a custom pipe and silencer.
  • Reduced Vibrations: Equipped with an integral counterbalance shaft for a smoother ride.
  • Carburetor Optimization: Designed to work effectively with stock 36mm or 38mm carburetors.

Specifications:

  • Bore: 89mm
  • Stroke: 82mm
  • Displacement: 510cc
  • Compression Ratio: 12.5:1
  • Squish: 1.47-2.00mm
  • Primary Ratio: 2.25 (72:32)

Important Considerations:

  • Due to the significant value of this kit, it will be shipped on a dedicated small pallet.
  • This is a custom kit, and as such, no warranty is implied or provided.
  • Please verify all components are correct before commencing assembly.
  • Minor modifications to mounts, exhaust, or other supporting parts may be necessary due to potential differences between US and EU market models.
  • A waiver confirming your understanding and agreement with these terms must be completed before the kit can be dispatched.
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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