🚀 TG4G
DirectoryAutobigmachine.co.jp
🚗 Auto 📍 HQ: Japan
B

bigmachine.co.jp

Overall Rating
★★⯨☆☆ 5.0/10
China Access
★☆☆ Limited (proxy recommended)
Data source
ai_refine · Last updated 2026-06-12

⚡ Score breakdown

5-dim weighted · /10
Performance25% 5.0
Value20% 5.0
China access20% 6.0
Reputation20% 5.2
Support15% 4.5

Dimension scores are derived from public data and fields; weighted into the composite. Reference only.

Editorial Highlights

Japanese motorcycle custom parts brand with an online store.

In-Depth Review TG4G Review ·2026-06-10 · For reference only

What It Is

BIGMACHINE is a motorcycle parts brand under Nakamura Seisakusho Co., Ltd. in Japan, and its official website indicates that it now operates an online store. The brand mainly builds on long-standing machining techniques such as aluminum cutting, producing Harley-Davidson-related custom parts including original wheels, Mid Control Kits, wide tires, and swingarms. It is closer to a manufacturer-operated e-commerce site than a third-party marketplace.

Core Capabilities

In terms of product selection and supply chain, BIGMACHINE emphasizes in-house machining, with products focused on heavyweight motorcycles and Harley customization scenarios. The Mid Control Kit is positioned around improving foot control and riding comfort; wheel sizes can be discussed depending on component availability; wide tires and swingarms are aimed at deeper visual and structural modifications. For fulfillment, the official website states that many items are made to order, with an estimated lead time provided during the initial inquiry. It supports inquiries about date-specific delivery and delivery to carrier branch offices, but cannot guarantee that all requests will be met.

Pricing and Payment

The website does not disclose a specific product price list. The FAQ notes that prices and lead times may change depending on market conditions, and that bulk purchases or recurring orders should be discussed via form, email, or phone. In terms of fees, various handling charges are generally included in the product price, though additional shipping fees may apply in some regions. Payment is mainly by cash on delivery, a common method in Japan; other payment methods require separate inquiry, and credit card payment is not clearly confirmed.

Pros and Cons

Its strengths are its highly vertical positioning and manufacturer background, which add credibility to its customization and machining capabilities. It can also provide replacement parts for existing customers for a fee. The official website also welcomes inquiries from custom shops, fitting well with a professional installation workflow. The drawbacks are limited transparency around pricing, inventory, lead times, and overseas shipping; made-to-order production may mean longer waiting times. For heavily modified vehicles, customers are responsible for determining fitment, and the website explicitly states that returns are not accepted, so communication before purchase can be relatively demanding.

Who It’s For and Access from China

BIGMACHINE is suitable for Harley owners in Japan, motorcycle customization enthusiasts, and custom shops that can handle installation and fitment assessment. It is less suitable for ordinary consumers looking for standardized ordering, immediate shipping, or a smooth cross-border direct-purchase experience. The main text does not provide the access status from mainland China, so it is considered unknown; the official website also does not specify logistics, payment, or after-sales arrangements for the Chinese market.

⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on bigmachine.co.jp official site.

About this entry

bigmachine.co.jp is an Japan Auto provider. TG4G tracks its product information, an overall rating of 5.0/10, and a China-accessibility score of Limited (proxy recommended). Click "Visit Official Site" to reach bigmachine.co.jp directly.

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Frequently Asked Questions

What is bigmachine.co.jp?
bigmachine.co.jp is a Japan-based Auto provider. Japanese motorcycle custom parts brand with an online store.
Is bigmachine.co.jp good? Is it worth it?
bigmachine.co.jp scores 5.0/10 on TG4G — a mixed rating, based in 日本. See the in-depth review below for pros, cons and China accessibility.
Is bigmachine.co.jp usable in China?
bigmachine.co.jp has unstable mainland China access; we recommend using a reliable proxy. The provider is headquartered in Japan and primarily serves overseas markets.
How do I sign up for bigmachine.co.jp?
Visit the bigmachine.co.jp official site to complete sign-up. Registration typically requires an email (Gmail/Outlook recommended) and a payment method. Most overseas services accept credit card / PayPal / crypto. See the "Visit Official Site" button on this page for the direct link.

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