Enhance your e-bike performance with this high-quality 42T Mid-Motor Chainring Kit featuring a durable protective disc designed to ensure smooth and stable chain operation while preventing chain contact and scratches on your bike frame. Crafted from robust chrome vanadium steel for the chainring and lightweight aluminum alloy for the protective disc and base, this kit offers excellent wear resistance and corrosion protection for long-lasting use. Key Features: · Durable Construction: Chrome vanadium steel chainring combined with an aluminum alloy protective disc provides strength, durability, and resistance to rust and wear. · Protective Disc Design: The integrated protective disc shields the bike frame from chain scratches, ensuring the longevity of your bike's appearance and components. · Positive and Negative Tooth Profile: Engineered to effectively prevent the chain from falling off during rides, promoting reliable and smooth gear changes. · Lightweight and Compact: Designed to minimize additional weight, this chainring kit adds no significant burden, helping maintain your bike’s agility and riding comfort. · Easy Installation: Compatible with mid-drive motors including M400, M300, M200, M215, M410, M315, and M420, making it a versatile upgrade option for a variety of e-bike models. Specifications: · Model: Chainring Kit / Chainring Base (optional) · Color: Black · Material: Aluminum Alloy (Protective Disc + Base), Chromium-Molybdenum Steel (Chainring) · Applicability: Compatible with M400, M300, M200, M215, M410, M315, M420 Mid Drive Motors · BCD: 104BCD · Protective Disc Diameter: 185mm (7.3 inches) · Chainring Diameter: 175mm (6.9 inches) · Item Weight: Chainring Kit - 285g (10.1oz); Chainring Base - 75g (2.6oz) Package Includes: · 1 x Chainring Kit Upgrade your mid-motor e-bike system with this precision-engineered 42T chainring kit that combines strength, protection, and reliability. Perfect for riders seeking enhanced chain stability and frame protection without compromising on weight or ease of installation.