---
title: "ls trunion upgrade kit — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/ls-trunion-upgrade-kit"
last_updated: "2026-07-14T04:56:41.526Z"
locale: en
meta:
  description: "prices mostly outside the sweet spot ($48.75–$329.24) — ls trunion upgrade kit doesn't clear our bar today."
  "og:description": "prices mostly outside the sweet spot ($48.75–$329.24) — ls trunion upgrade kit doesn't clear our bar today."
  "og:title": "ls trunion upgrade kit — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
---

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# **ls trunion upgrade kit**

**Skip it**

Prices mostly outside the sweet spot ($48.75–$329.24) — this niche doesn't clear our bar today.

Market size 19Growth 30Conversion 34Competition 28Returns 81Price range 18Avg price 60Brand share 39Review moat 97Quality gap 35

**Review moat**

**Incredible****52.45**

avg incumbent reviews — the moat a new listing must climb

**Returns**

**Great****1.7%**

return rate — above 6% kills the launch gate

**Avg price**

**Good****$145.13**

avg listing price — sweet spot $15–$100

**Brand share**

**Okay****81%**

top-5 brand share — brands hold most of the demand

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Conversion**

**Okay****2.7%**

search→purchase rate — share of searches ending in a sale

**Growth**

**Okay****+3.7%**

90-day search growth — must beat 0% to launch

**Competition**

**Okay****68%**

top-5 click share — leaders hold, buyers still browse

**Market size**

**Bad****$77K**

$77K/yr · 20K searches

**Price range**

**Bad****$48.75–$329.24**

cheapest to priciest tracked listing — scored on the share inside $15–$100

## **Competition**

The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**13 **▼falling

**Sellers**

**53**

**Top-5 brand share**

**81%**

**Open market**

**14%**

- Michigan Motorsports40% - Dynosty20% - Xotic Performance8% - BTR Brian Tooley Racing7% - RJSPHH7% - labwork5% - Open — no brand owns it (7 brands, 14%)

## **Product shelf**

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%$15K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)1 product missing review or click data not plotted

All 20 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Michigan Motorsports LS1 Rocker Arms with Upgraded Trunnions | Fits 1999-2013 4.8L 5.3L 5.7L Cathedral Port LS & 1999-2006 6.0L LS Engines | Complete Set of 16 Ready-to-Install Rockers](https://m.media-amazon.com/images/I/51Gsx1LlZnL.jpg)**Michigan Motorsports LS1 Rocker Arms with Upgraded Trunnions | Fits 1999-2013 4.8L 5.3L 5.7L Cathedral Port LS & 1999-2006 6.0L LS Engines | Complete Set of 16 Ready-to-Install Rockers**Michigan Motorsports**$195.21**4.7★342 rev](https://www.amazon.com/dp/B01JDIQRQK) [2![BTR V2 Trunnion Kit LS Premium Rocker Arm Trunion LS LS1 LS3 4.8 5.3 5.7 6.0 6.2 TK002](https://m.media-amazon.com/images/I/51YC48ukHWL.jpg)**BTR V2 Trunnion Kit LS Premium Rocker Arm Trunion LS LS1 LS3 4.8 5.3 5.7 6.0 6.2 TK002**Dynosty**$149.25**4.6★77 rev](https://www.amazon.com/dp/B0CQ62YCKN) [3![Michigan Motorsports LS Rocker Arm Trunnion Upgrade Kit | High-Performance Bearing Upgrade | Fits GM LS1 LS2 LS3 LS6 4.8L 5.3L 5.7L 6.0L Engines](https://m.media-amazon.com/images/I/51iVRrgflTL.jpg)**Michigan Motorsports LS Rocker Arm Trunnion Upgrade Kit | High-Performance Bearing Upgrade | Fits GM LS1 LS2 LS3 LS6 4.8L 5.3L 5.7L 6.0L Engines**Michigan Motorsports**$112.71**4.6★180 rev](https://www.amazon.com/dp/B075X5PQHN) [4![LS1 Rocker Arms with Bolts and Pre-Installed Trunion Kit - Fits LS2 LS6 LQ4 LQ9 LM7 4.8L 5.3L 5.7L 6.0L Engines - Xotic Performance | CP201](https://m.media-amazon.com/images/I/519+xJjsj-L.jpg)**LS1 Rocker Arms with Bolts and Pre-Installed Trunion Kit - Fits LS2 LS6 LQ4 LQ9 LM7 4.8L 5.3L 5.7L 6.0L Engines - Xotic Performance | CP201**Xotic Performance**$174.19**4.3★52 rev](https://www.amazon.com/dp/B0DSJMGGV5) [5![BTR Brian Tooley Racing LS Rocker Arm Trunbion Kit (TK001) | Fits 4.8L 5.3L 5.7L 6.0L 6.2L LS1 LS2 LS3 LQ4 LM7 LM4 Engines | Upgraded Bearing Trunnion Kit](https://m.media-amazon.com/images/I/41IdwGAouWL.jpg)**BTR Brian Tooley Racing LS Rocker Arm Trunbion Kit (TK001) | Fits 4.8L 5.3L 5.7L 6.0L 6.2L LS1 LS2 LS3 LQ4 LM7 LM4 Engines | Upgraded Bearing Trunnion Kit**BTR Brian Tooley Racing**$119.19**4.9★26 rev](https://www.amazon.com/dp/B07HS3NGG6)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Engine 16 Pcs LS Rocker Arms w/Installed Upgraded Trunion Kit Fit for GM LS 4.8L 5.3L 5.7L 6.0L LS2 LS6 LQ4 LQ9 LY5 LM7 L33 Replacement 10214664 12681275](https://m.media-amazon.com/images/I/41xuUhck0ZL.jpg)**Engine 16 Pcs LS Rocker Arms w/Installed Upgraded Trunion Kit Fit for GM LS 4.8L 5.3L 5.7L 6.0L LS2 LS6 LQ4 LQ9 LY5 LM7 L33 Replacement 10214664 12681275**TKUASWEB**$94.44**1 rev1y ago](https://www.amazon.com/dp/B0FCMB6SJX) [![EPChunMi LS Rocker Arm Trunion Kit with upgraded bolt Fits GM LS1 LS2 LS3 LS6 4.8 5.3 5.7 6.0 6.2L Engines](https://m.media-amazon.com/images/I/518EFlIjgNL.jpg)**EPChunMi LS Rocker Arm Trunion Kit with upgraded bolt Fits GM LS1 LS2 LS3 LS6 4.8 5.3 5.7 6.0 6.2L Engines**EPChunMi**$95.24**6 rev1y ago](https://www.amazon.com/dp/B0FB3QDDH3) [![EPChunMi LS Rocker Arm Trunion Kit Fits GM LS1 LS2 LS3 LS6 4.8 5.3 5.7 6.0 6.2L Engines no bolts](https://m.media-amazon.com/images/I/51rLNmQhoiL.jpg)**EPChunMi LS Rocker Arm Trunion Kit Fits GM LS1 LS2 LS3 LS6 4.8 5.3 5.7 6.0 6.2L Engines no bolts**EPChunMi**$88.43**5 rev1y ago](https://www.amazon.com/dp/B0F98D5MQV) [![A-Premium 16Pcs Alloy Steel LS1 Rocker Arms and Bolts with Trunion Kit Compatible with GM LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 346 1.7 Ratio 4.8L 5.3L 5.7L 6.0L](https://m.media-amazon.com/images/I/510eCbYQsYL.jpg)**A-Premium 16Pcs Alloy Steel LS1 Rocker Arms and Bolts with Trunion Kit Compatible with GM LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 346 1.7 Ratio 4.8L 5.3L 5.7L 6.0L**A-Premium**$139.01**10 rev1y ago](https://www.amazon.com/dp/B0DPKZ8SH2) [![CHE4290 LS Trunnion Kit with LS Rocker Arm Bolts | Fits LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 5.3L 5.7L 6.0L 6.2L | High Performance Trunion Upgrade Kit](https://m.media-amazon.com/images/I/51ajO--snsL.jpg)**CHE4290 LS Trunnion Kit with LS Rocker Arm Bolts | Fits LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 5.3L 5.7L 6.0L 6.2L | High Performance Trunion Upgrade Kit**Michigan Motorsports**$268.24**1 rev1y ago](https://www.amazon.com/dp/B0DNG4ZL9Y)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Pateyney LS1 LS2 LS6 5.7L 6.0L Enhanced Rocker Arms with Upgraded Trunion Kit Installed](https://m.media-amazon.com/images/I/41QL875Vt7L.jpg)**Pateyney LS1 LS2 LS6 5.7L 6.0L Enhanced Rocker Arms with Upgraded Trunion Kit Installed**Pateyney**$108.49**0.0★**▲ 195%**](https://www.amazon.com/dp/B0DGQ1N6DP) [![EPChunMi LS Rocker Arm Trunion Kit Fits GM LS1 LS2 LS3 LS6 4.8 5.3 5.7 6.0 6.2L Engines no bolts](https://m.media-amazon.com/images/I/51rLNmQhoiL.jpg)**EPChunMi LS Rocker Arm Trunion Kit Fits GM LS1 LS2 LS3 LS6 4.8 5.3 5.7 6.0 6.2L Engines no bolts**EPChunMi**$88.43**4.6★**▲ 187%**](https://www.amazon.com/dp/B0F98D5MQV) [![CHE4290 LS Trunnion Kit with LS Rocker Arm Bolts | Fits LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 5.3L 5.7L 6.0L 6.2L | High Performance Trunion Upgrade Kit](https://m.media-amazon.com/images/I/51ajO--snsL.jpg)**CHE4290 LS Trunnion Kit with LS Rocker Arm Bolts | Fits LS1 LS2 LS6 LQ4 LQ9 LY5 LY6 LM7 5.3L 5.7L 6.0L 6.2L | High Performance Trunion Upgrade Kit**Michigan Motorsports**$268.24**5.0★**▲ 124%**](https://www.amazon.com/dp/B0DNG4ZL9Y) [![BTR V2 Trunnion Kit with Bolts Premium Rocker Arm Trunion LS LS1 LS3 4.8 5.3 5.7 6.0 6.2 TK002](https://m.media-amazon.com/images/I/51OS-QhtJ+L.jpg)**BTR V2 Trunnion Kit with Bolts Premium Rocker Arm Trunion LS LS1 LS3 4.8 5.3 5.7 6.0 6.2 TK002**Dynosty**$168.14**4.5★**▲ 25%**](https://www.amazon.com/dp/B0CQ6B79BX) [![BTR Brian Tooley Racing LS Rocker Arm Trunbion Kit (TK001) | Fits 4.8L 5.3L 5.7L 6.0L 6.2L LS1 LS2 LS3 LQ4 LM7 LM4 Engines | Upgraded Bearing Trunnion Kit](https://m.media-amazon.com/images/I/41IdwGAouWL.jpg)**BTR Brian Tooley Racing LS Rocker Arm Trunbion Kit (TK001) | Fits 4.8L 5.3L 5.7L 6.0L 6.2L LS1 LS2 LS3 LQ4 LM7 LM4 Engines | Upgraded Bearing Trunnion Kit**BTR Brian Tooley Racing**$119.19**4.9★**▲ 23%**](https://www.amazon.com/dp/B07HS3NGG6)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +3.7% search growth over the last 90 days.

500300Spike '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Quality-Overall**42%

*“High quality, very easy to install with just a bench vise”*

**Value For Money**20%

*“this kit is well worth the money”*

**Assembly/Installation**14%

*“very well put together”*

**Durability**6%

*“Longevity”*

**Size-Overall**4%

*“Fit great”*

**Efficiency**3%

*“Looks good works good”*

**Advertised Vs Actual Product**3%

*“Does what they're supposed to”*

**Thickness**3%

*“The clips themselves are consistent on thickness”*

**Material Quality**1%

*“materials is obvious right out of the box”*

**Noise Level**1%

*“After installation, valve train operation is smooth and quiet, even at higher RPMs”*

### **What buyers complain about **

**Quality-Overall**43%

*“this Kit is not High Quality”*

**Durability**21%

*“Snapped”*

**Defective Material/Parts**14%

*“Roller bearings came in broken”*

**Noise Level**14%

*“top end sounds like nothing”*

### **Top return reasons **

**Defective Material/Parts**24%

**Size-Overall**23%

**Functionality-Overall**7%

**Shape/Style**6%

**Compatibility-Overall**6%

**Advertised Vs Actual Product**6%

**Mechanism Issues**6%

**Value For Money**4%

**Assembly/Installation**4%

**Quality-Overall**3%