customjapan.jp

What It Is

Custom Japan（株式会社カスタムジャパン） is a membership-based B2B catalog mail-order platform in Japan for the vehicle aftermarket. Its customers include motorcycle dealers, bicycle shops, auto repair shops, parts and accessories stores, gas stations, and large automotive accessory retailers. Its core model is not open retail e-commerce, but a closed membership-based procurement system: prices are shown only after member login, and orders can be placed via printed general catalogs, web catalogs, phone, FAX, and other channels.

Core Capabilities and Supply Chain

The platform focuses on motorcycles, bicycles, automobiles, and maintenance-related products. The source text states that its web catalog contains over 500,000 SKUs, covering domestic and international brands, well-known overseas brands, original brands, and a significant number of in-house developed products. One of its key capabilities is parts fitment search: users can find compatible parts by frame number, vehicle model, OEM part number, brand, and other criteria. This is especially valuable for accurate procurement in repair and maintenance scenarios. On the supply chain side, the company says it can purchase directly from overseas manufacturers, and reduce procurement costs through private brands and direct sourcing.

Pricing, Logistics, and Service

Specific details such as commissions, membership fees, payment methods, and payment terms are not disclosed in the source text. What can be confirmed is that it uses a membership-based wholesale/catalog purchasing model, and prices are not publicly visible to search engines. For logistics, Custom Japan has logistics bases in Japan and overseas, manages manufacturing, storage, and delivery through its own systems, and claims to support same-day shipping. In terms of support, it operates its own customer service center and accepts orders by phone in addition to web and FAX, making it suitable for repair businesses that need fitment confirmation and human communication.

Pros, Cons, and Best Fit

Its strengths include deep product coverage, a large SKU base, professional fitment search, strong B2B member coverage, and capabilities in quality control and logistics fulfillment. It is particularly valuable for vehicle repair businesses, parts retailers, and accessory stores in Japan that need to replenish inventory. Its limitations are the lack of external transparency: fees, payments, cross-border account opening, and after-sales rules are unclear. The platform is also highly verticalized around the vehicle aftermarket, so it is not suitable for general e-commerce sellers handling broad product categories.

Access from China and Alternatives

The source text does not provide information on access from mainland China, Chinese-language procurement support, or cross-border payment, so china_access can only be assessed as unknown. Chinese sellers looking to source from or benchmark against similar platforms may consider MonotaRO, Webike, Amazon Business Japan, or domestic alternatives via the 1688 automotive and motorcycle parts supply chain. To use Custom Japan, it is important to verify membership eligibility, whether a Japanese receiving address is required, available payment methods, and whether overseas companies are supported.