---
product_id: 145015195
title: "Ultima R2 Performance Carburetor 42-90"
brand: "ultima products"
price: "KD 1.54"
currency: KWD
in_stock: false
reviews_count: 8
url: https://www.desertcart.com.kw/products/145015195-ultima-r2-performance-carburetor-42-90
store_origin: KW
region: Kuwait
---

# Easy bolt-on installation Enhanced throttle response Interchangeable with S&S Ultima R2 Performance Carburetor 42-90

**Brand:** ultima products
**Price:** KD 1.54
**Availability:** ❌ Out of Stock

## Summary

> Rev up your ride! 🚴‍♂️ Unleash the power within.

## Quick Answers

- **What is this?** Ultima R2 Performance Carburetor 42-90 by ultima products
- **How much does it cost?** KD 1.54 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/145015195-ultima-r2-performance-carburetor-42-90)

## Best For

- ultima products enthusiasts

## Why This Product

- Trusted ultima products brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Thunder Jet Ready:** Easily add Thunder jets for an extra performance boost without the fuss.
- • **Lightweight Design:** Weighing in at just 0.01 ounces, this carburetor won't weigh you down.
- • **Responsive Performance:** Relocated accelerator pump nozzle for lightning-fast throttle response, giving you the edge on the road.
- • **Seamless Compatibility:** Directly interchangeable with S&S Super E Carburetors, ensuring a hassle-free upgrade.
- • **Effortless Installation:** No expensive machining required—just bolt on and ride!

## Overview

The Ultima R2 Performance Carburetor 42-90 is a high-performance carburetor designed for seamless compatibility with S&S Super E models. It features a relocated accelerator pump nozzle for improved throttle response and allows for easy installation without the need for costly machining. Weighing only 0.01 ounces, it’s the perfect upgrade for those looking to enhance their motorcycle's performance effortlessly.

## Description

Ultima’s performance carburetors are directly interchangeable with S&S Super G and Super E Carburetors. Ultima carburetors will accept S&S jets and S&S bolt pattern air filter assemblies & manifolds.

## Features

- Directly interchangeable with S&S Super E Carburetors
- A relocated accelerator pump nozzle for increased throttle response
- Thunder jets are a bolt on
- No expensive machining required

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Ultima Products |
| Brand | Ultima Products |
| Item Weight | 0.01 ounces |
| Manufacturer Part Number | 42-90 |

## Product Details

- **Brand:** Ultima Products
- **Flange Type:** Bolt On
- **Specific Uses For Product:** Performance
- **Manufacturer:** Ultima Products

## Images

![Ultima R2 Performance Carburetor 42-90 - Image 1](https://m.media-amazon.com/images/I/61c8AlVnLZL.jpg)
![Ultima R2 Performance Carburetor 42-90 - Image 2](https://m.media-amazon.com/images/I/81ZAKzL8-AL.jpg)

## Questions & Answers

**Q: is this a direct bolt on replacement for the S&S super E shorty? Any surprises when trying to replace the Super E shorty?**
A: Yes it is. It has the Adjustable air bleed like the newer S&S carbs and is ready for thunderjet if you choose. So far I havent seen any downsides

**Q: Will this fit on my 2000 honda shadow 600 vlx?**
A: Short answer probably not.  It  possibly can be done, but you need an intake and not sure they're made for Honda, maybe a spacer, new air cleaner at a minimum.  I would pass on the job in my shop.

**Q: Will this fit my 96 heritage?**
A: It should work with minimal adjustments, but you will probably need to change the intake manifold to a S&S style manifold, and include the insulator block keeping in mind the thickness of the insulator block to get the right “fit” of whatever aftermarket air breather/cover that you use to get the right distance from your tank. Also the push pull throttle cables...just need to be mindful if your existing cables will work or will need to replace.

I installed on a ‘66 Shovel stroker motor, and did all of the above, replacing a Bendix, with very minor adjustments....the only issue I had was that the bowl plug o-ring seal would not keep the fuel from seeping...tried numerous seals and gaskets and finally came up with a resolution to stop the fuel leak. But all in all, a great carb, runs out well at low and top end, good quick throttle response.

**Q: Will this carb fit a 2002 xl1200c harley davidson**
A: You need to swap the intake to an s&s flange intake

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great, Not Junk!!!
*by T***I on July 13, 2017*

Installed on my 84 XLX in place of the S&S carb. Fired up right out of the box. I bumped up the idle and its sounds great without even touching the air adjustment. Its a project bike so I'm waiting to tweek it better after I get the bike together. I would highly recommend this carb to anyone.

### ⭐⭐⭐⭐ Check item for damage.  Packaging left a lot to be desired.
*by D***. on October 24, 2024*

Item arrived unharmed although it was obvious that the package had been hit hard in several spots. Item just as described. The R-2 carb has several improvements over the original S&S version and it ran pretty good straight out of the box. After tuning and a jet change our old 80ci Evo came to life.

### ⭐⭐⭐⭐⭐ Hd
*by A***R on March 4, 2025*

Nice product

## Frequently Bought Together

- Ultima R2 Performance Carburetor 42-90
- S&,S Cycle Spacer Block 16-0497
- James Gasket S&S Super E Air Cleaner to Carb 29058-SSE

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-18*