---
title: "4x137 Wheel Spacers — $82K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/automotive/4x137-wheel-spacers"
last_updated: "2026-08-09T12:49:13.460Z"
locale: en
meta:
description: "Niche score 48/100 · $82K/yr market · 14K searches/yr · $78.28 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 48/100 · $82K/yr market · 14K searches/yr · $78.28 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "4x137 Wheel Spacers — $82K/yr Amazon US Niche (2026) - Flapen"
---
# **4x137 wheel spacers**
**Skip it**
A small market ($82K/yr) — this niche doesn't clear our bar today.
Market size 21Growth 24Conversion 77Competition 52Returns 21Price range 67Avg price 83Brand share 72Review moat 97Quality gap 42
**Review moat**
**Incredible****64.9**
avg incumbent reviews — the moat a new listing must climb
**Avg price**
**Great****$78.28**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****7.6%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****62%**
top-5 brand share — brands hold most of the demand
**Price range**
**Good****$31.99–$133.40**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****54%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-1.1%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$82K**
$82K/yr · 14K searches
**Returns**
**Bad****6.2%**
return rate — above 5% kills the launch gate
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%") [** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, 4x137 wheel spacers is a $82K/yr Amazon United States market (14K searches/yr). The top 5 brands hold 62% of demand. Verdict: Skip it — 48/100.
Data updated Jul 9, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **4x137 wheel spacers market data**
- **Units sold / yr**
- **500–750**
- avg 0–100/product
- **Revenue / yr**
- **$39K–$59K**
- units × avg price
- **Conversion rate**
- **7.6%**
- **Avg BSR**
- **#836**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **97%**
- **Out of stock**
- **4.6%**
- **Avg brand age**
- **60 months**
- **Avg seller age**
- **202 days**
## **Competition & brand share**
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**18 **▲rising
**Sellers**
**25**
**Top-5 brand share**
**62%**
Top 20: 100%
**Top-5 click share**
**54%**
Top 20: 89%
**Open market**
**31%**
- Rough Country17% - FLYCLE16% - EVIL ENERGY10% - Richeer10% - YHTAUTO9% - ECCPP7%
## **Demand**
Weekly Amazon search volume, last 18 weeks — -1.1% search growth over the last 90 days.
400300Mar '26Mar '26Apr '26May '26May '26Jun '26
[**Open Trend **](https://flapen.com/research/us/automotive/4x137-wheel-spacers/trend)
## **Top 4x137 wheel spacers products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%$4K10%$8K15%$12K20%$16K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Rough Country 1.5 Wheel Spacers for Can-Am Defender | 4x137-10093 Aluminum/Spacer**Rough Country**$77.17**4.7★305 rev](https://www.amazon.com/dp/B08428Z7MJ) [2**2 inch 4x137 Wheel Spacers for CAN-AM Defender Outlander Commander Kawasaki Mule 4PCS 4x137mm Wheel Spacer with 10x1.25 Studs & 110mm Bore**FLYCLE**$98.89**4.4★185 rev](https://www.amazon.com/dp/B089QCTW7H) [3**Richeer 2 Inch 4x137mm ATV Wheel Spacer for Can-Am Commander Outlander Defender Bombardier Renegade Mule 4PCS 4X137 Wheel Spacers with M10X1.25 Studs & 110mm hub bore**Richeer**$99.01**4.5★98 rev](https://www.amazon.com/dp/B089W23KMK) [4**GAsupply ATV 4x137 Wheel Spacers 1.5 inch Fit for Can-Am Maverick Honda 1000R 1000X 1000-3 1000-5 38mm 4 Lug Black 4x137mm Wheel Spacer with 12x1.5 Studs 110mm Hub Bore 4PCS**GAsupply**$98.25**4.6★37 rev](https://www.amazon.com/dp/B0DQD5RD91) [5**YHTAUTO 4x137mm Wheel Spacers 1 inch Fits Bombardier Can-Am Kawasaki Suzuki Models Outlander Commander Renegade Mule Prairie Tire Spacers w/ M10x1.25 Studs 110mm Center Bore 4 Lug 2PCS**YHTAUTO**$50.39**4.5★80 rev](https://www.amazon.com/dp/B0C9WPX6DZ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**EVIL ENERGY 4x137 Wheel Spacers Compatible with EZGO EZ GO Golf Cart Club Car ATV 2 inch Lug Centric Wheel Spacer 4 pcs 4x137 mm with 110 Hub Bore M10x1.25 Stud Not Hubcentric Black**EVIL ENERGY**$95.66**2 rev5mo ago](https://www.amazon.com/dp/B0GJT5RT11) [**EVIL ENERGY 4x137 Wheel Spacers Compatible with EZGO EZ GO Golf Cart Club Car ATV 2 inch Lug Centric Wheel Spacer 4 pcs 4x137 mm with 110 Hub Bore M12x1.5 Stud Not Hubcentric Silver**EVIL ENERGY**$99.08**2 rev5mo ago](https://www.amazon.com/dp/B0GJT498VR) [**MZS 4x137 Wheel Spacers 2 for Defender - M101.25 Studs 110mm Center Bore Compatible with HD5 / HD8 / HD10 4WD 4/137 4 Lug Tire - 4 Pack**MZS**$133.40**31 rev1y ago](https://www.amazon.com/dp/B0DZ2LMK8X) [**MZS 4x137 Wheel Spacers 2 for Defender - M101.25 Studs 110mm Center Bore Compatible with HD5 / HD8 / HD10 4WD 4/137 4 Lug Tire - 2 Pack**MZS**$82.13**31 rev1y ago](https://www.amazon.com/dp/B0DZ2JRGDS) [**GAsupply ATV 4x137 Wheel Spacers 1.5 inch Fit for Can-Am Maverick Honda 1000R 1000X 1000-3 1000-5 38mm 4 Lug Black 4x137mm Wheel Spacer with 12x1.5 Studs 110mm Hub Bore 4PCS**GAsupply**$98.25**37 rev1y ago](https://www.amazon.com/dp/B0DQD5RD91)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**EVIL ENERGY 4x137 Wheel Spacers Compatible with EZGO EZ GO Golf Cart Club Car ATV 2 inch Lug Centric Wheel Spacer 4 pcs 4x137 mm with 110 Hub Bore M12x1.5 Stud Not Hubcentric Silver**EVIL ENERGY**$99.08**5.0★**▲ 254%**](https://www.amazon.com/dp/B0GJT498VR) [**EVIL ENERGY 4x137 Wheel Spacers Compatible with EZGO EZ GO Golf Cart Club Car ATV 2 inch Lug Centric Wheel Spacer 4 pcs 4x137 mm with 110 Hub Bore M10x1.25 Stud Not Hubcentric Black**EVIL ENERGY**$95.66**5.0★**▲ 251%**](https://www.amazon.com/dp/B0GJT5RT11) [**VLAOSCHI Black Forged 4x137 ATV Wheel Spacers 1.5 Inch with 12x1.25 Studs Compatible with Kawasaki 4 Lug for Mule 2020 2500 2510 2520 3000 4000 4010 Trans PRODX PROFX Teryx4 Teryx 750 800 - Pack of 2**VLAOSCHI**$58.10**3.8★**▲ 182%**](https://www.amazon.com/dp/B0D4R98W1W) [**VLAOSCHI Black Forged 4x137 ATV Wheel Spacers 2 Inch with 10x1.25 Studs Compatible with Kawasaki Can-Am Bombardier Suzuki 4 Lug 4/137 for Outlander Commander Renegade Mule Prairie - Pack of 2**VLAOSCHI**$68.52**4.2★**▲ 169%**](https://www.amazon.com/dp/B0D4R6BD91) [**ROMELACK 2 Wheel Spacer Adapters 4x137mm to 4x137mm 6061 Aluminum Compatible with Can-Am Outlander Renegade Commander Maverick Defender Traxter(4 Pcs)**ROMELACK**$94.55**5.0★**▲ 103%**](https://www.amazon.com/dp/B0DJVDPY95)
**~~View all trending →~~**
## **What buyers say about 4x137 wheel spacers**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**33%
*“Fit perfectly”*
**Quality-Overall**18%
*“Overall, great quality for the price and a solid upgrade if you want extra width and better stability on a Can-Am X3”*
**Efficiency**11%
*“They worked perfectly”*
**Assembly/Installation**8%
*“Easy to install”*
**Mounting**7%
*“Very nice spacers”*
**Value For Money**7%
*“Good value”*
**Ease Of Use**7%
*“these are convenient”*
**Design-Overall**1%
*“functional appearance without unnecessary design elements”*
**Durability**1%
*“The materials feel durable and capable of handling regular use on golf carts and similar vehicles”*
**Strength**1%
*“Solid Fit and Reliable Performance for Off Road Use”*
### **What buyers complain about **
**Defective Material/Parts**50%
*“One of the post stripped”*
**Wheel Quality**25%
*“the wheel studs were all the way pulled in”*
### **Top return reasons **
**Size-Overall**60%
**Compatibility-Overall**12%
**Advertised Vs Actual Product**6%
**Wheel Quality**4%
**Mounting**3%
**Defective Material/Parts**3%
**Functionality-Overall**3%
**Width**2%
**Assembly/Installation**2%
**Product Condition**2%
## **Common questions**
- **Is 4x137 wheel spacers profitable to sell on Amazon United States?**
- The niche generates $82K/yr across 31 tracked products. 0 of 6 products launched in the last 360 days are still selling. 90-day search growth is -1.1%. Flapen's verdict: Skip it (48/100).
- **How competitive is the 4x137 wheel spacers niche?**
- 18 brands and 25 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 62% of demand.
- **What do buyers complain about in 4x137 wheel spacers?**
- Top complaints mined from reviews: Defective Material/Parts, Wheel Quality. The return rate is 6.2% — above our launch gate.
- **What does it cost to enter the 4x137 wheel spacers niche?**
- Listings span $31.99–$133.40; the average listing price is $78.28 (sweet spot $15–$100). The average incumbent carries 65 reviews — the moat a new listing must climb.
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