HardDrive 40mm CV Carb Slide Diaphragm – 820‑27502 – Made in Taiwan

OVERVIEW

HardDrive 40mm CV Carb Slide Diaphragm replaces worn or torn membranes in constant-velocity carburetors to restore smooth throttle response and reliable slide operation. Crafted from high-quality rubber and manufactured in Taiwan, this diaphragm serves as a direct-fit component for rebuilding or maintaining carburetion setups that require a 40mm specification.

ENGINEERING & PERFORMANCE

Designed for direct replacement, this diaphragm ensures accurate slide travel by maintaining the correct shape and flexibility within the carburetor bore. The rubber construction provides consistent sealing properties necessary to deliver unhindered airflow and precise fuel metering, addressing performance loss caused by stretched or cracked original parts. Engineered for longevity, the material supports reliable operation to extend service intervals and keep throttle modulation sharp.

KEY FEATURES

• Replacement 40mm CV carburetor slide diaphragm
• Made in Taiwan with high-quality rubber construction
• Restores proper slide movement and throttle response
• Direct replacement for worn or damaged diaphragms
• Supports smooth throttle operation in constant-velocity carburetors
• Rebuilds carburetor performance for older applications
• Universal compatibility with standard 40mm CV carburetor designs

TECHNICAL SPECIFICATIONS

• Brand: HardDrive
• Part name: 40mm CV Carb Slide Diaphragm
• Construction: Rubber
• Manufacturing origin: Taiwan
• Part number: 820-27502

FITMENT

• Universal — fits most Harley-Davidson models as specified.

WHY HARLEY RIDERS CHOOSE THIS

Riders select this HardDrive diaphragm to eliminate hesitation and regain crisp throttle engagement when servicing 40mm constant-velocity carburetors. The high-quality rubber formulation delivers a secure seal that promotes rapid slide movement, resulting in instant power delivery and a more responsive riding experience compared to degraded OEM parts. Being a correct-fit replacement simplifies carburetor overhaul projects by ensuring mechanical accuracy without altering factory dimensions. This component provides dependable performance retention for vintage platforms, offering a cost-effective solution to restore the sharp carburetor feel expected from well-maintained motorcycles.