SixThreeZero.com: A Case Study

Real results from real clients — a look at the link building work behind the numbers.

SixThreeZero.com

SixThreeZero.com is an e-commerce brand that designs and sells comfort-focused bicycles — beach cruisers, step-thru bikes, and electric trikes — built with accessibility in mind for seniors, larger riders, and people with limited mobility. Nelson Internet Marketing has worked with SixThreeZero.com on link building since November 2022, making it one of the agency’s longest-running and largest-scale link building engagements — the relationship remains active today.

The Challenge

SixThreeZero.com competes in a crowded direct-to-consumer bike market, and the client set a strict rule from day one: only one link built per target page and anchor combination. That ruled out leaning on the same easy placements twice — every new link had to come from fresh prospecting, month after month, at real scale.

The product lines also demanded editorial-quality placements rather than obvious sponsored posts — buying guides, lifestyle pieces, and health and mobility content across niches like biking, recreation, outdoors, fitness, and electronics, each one built to genuinely fit the publication it ran on.

What We Did

• Continuous prospecting: ongoing research every month to find new, relevant sites across biking, recreation, outdoors, lifestyle, fitness, and electronics
• Personalized outreach: direct, individualized pitches to editors and site owners, offering a menu of ready-to-go article ideas rather than a generic template
• Editorial and guest post content: articles built around real reader questions — buying guides, health benefits, accessibility, and mobility — with natural links back to sixthreezero’s specific product and collection pages
• Batch tracking and reporting: links delivered and reported in structured monthly batches so the client always knows exactly what went live and when

The Results

Since the engagement began in November 2022, this steady, high-volume approach has produced one of the agency’s largest link building portfolios for a single client:

• 309 live, published links secured and counting, across 308 unique referring domains
• Placements on recognized lifestyle and news outlets, including NY Weekly, Bit Rebels, and CIO Look
• Links built across SixThreeZero.com’s full product range — beach cruisers, women’s bikes, electric tricycles, and step-thru electric bikes — each pointing to the specific collection or product page it supports
• Delivered in structured monthly batches — batch 14 alone added another 30 links — keeping a steady drip of new links live year after year
• Domain authority climbing alongside the link count: sixthreezero.com now holds a 42 Authority Score, roughly 3,200 referring domains, and 15,100 backlinks, per third-party tracking

The site’s own organic performance backs this up. Semrush’s traffic trendline for sixthreezero.com climbs steadily from 2013 through the engagement’s start in late 2022, then keeps building afterward, with organic search now driving roughly 62,100 monthly visits across more than 31,400 ranking keywords. The 42 Authority Score — “Very good” on Semrush’s own scale — sits on top of that 3,200-referring-domain, 15,100-backlink profile, a direct reflection of nearly four years of sustained editorial link building.

That authority is showing up in AI-powered search too. Semrush tracks sixthreezero at a 20 AI Visibility score with roughly 1,100 mentions and 2,200 cited pages across ChatGPT, Google’s AI Overviews, AI Mode, and Gemini — additional reach on top of traditional organic rankings that a link-building program built this consistently tends to produce.

That authority shows up across a wide range of bike-buying and bike-education searches. For the search terms below, SixThreeZero.com sits in the top three organic results, is featured in Google’s AI Overview, or is in the top three of ecommerce/shopping results:

• sixthreezero cruiser bicycles
• bikes for large riders
• small bike women
• how to fill road bike tires
• trike for disabled adults
• beach cruiser with hand brakes
• three wheeled electric bicycle
• electric bikes cruiser
• what is a good biking speed
• best bike for mom and toddler
• tricycle vs bicycle
• bike frame size 20
• best female hybrid bikes
• electric passenger tricycle
• e trike carrier
• girls bike size chart
• what is a beach cruiser bicycle
• electric bikes for seniors with balance problems
• three wheel e bike
• cruiser bike with motor
• bicicletas en walmart para adultos
• bikes for summer
• what size bike does a 7 year old need
• big and tall bikes
• ebike 3 wheels
• four wheeled electric bike
• air pressure bicycle
• step-through electric bikes for seniors
• three seater bicycle
• e bike mobility
• bike size for 9 year old
• short bike
• ladies 3 speed bicycle
• bike wheel size height chart
• electric quadricycle

Why It Worked

Link building at this scale lives or dies on process. Nearly four years in, SixThreeZero.com’s growth comes down to disciplined, unglamorous fundamentals — prospecting that never stops, outreach that respects the client’s one-link-per-page rule, and content that gives an editor a real reason to say yes. That consistency, batch after batch, is what turned a modest early campaign into one of the largest link portfolios the agency manages.

The Outcome

SixThreeZero.com remains an active Nelson Internet Marketing client today, nearly four years into the engagement, with new links continuing to go live in regular batches. It stands as one of the agency’s largest and most consistent link-building partnerships.