# Pitster Pro - 155 Z H-O Engine

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- **Breadcrumbs:** [Home](https://tboltusa.com/store/index.md) > [Engines](https://tboltusa.com/store/engines-c-114.md) > [All Horizontal Pit Bike Engines](https://tboltusa.com/store/engines-all-horizontal-pit-bike-engines-c-114_1034.md) > Pitster Pro - 155 Z H-O Engine
- **Web page:** [this page on tboltusa.com](https://tboltusa.com/store/pitster-pro-155-engine-p-522.html)
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All prices are in US dollars (USD). Shipping and any tax are worked out at checkout.

## Summary

- **Part number:** PP-0522
- **Price:** $799.00 USD (before options)
- **Stock:** Out of stock. It cannot be added to the cart right now. A person can ask to be emailed when it is back: [Get on the List](https://tboltusa.com/store/contact_us.php?pid=522&stockcheck=true) ([Contact us](https://tboltusa.com/store/contact_us.md))
- **Reviews:** [8 reviews, average 4.9 of 5](https://tboltusa.com/store/reviews/pitster-pro-155-engine-pr-522.html)
- **Product id:** 522
- **Product last changed:** 2024-07-03

## Options

This product has options. Pick one value for every option. A value marked +$X adds that amount to the price; -$X takes it off.

### Exhaust Port Angle

- Honda Exhaust Port: no price change: `choice/62-428`

### Shipping

The "Shipping" option is this heavy item's own flat shipping fee; it is added to the item.

- Flat Rate: +$80.00: `choice/8-26`

## What it fits

The store lists a part under each bike or engine model it is meant for (the categories below) and may name models in the description. Do not assume it fits a bike or engine that is not named here; ask the store first.

- [Engines > All Horizontal Pit Bike Engines](https://tboltusa.com/store/engines-all-horizontal-pit-bike-engines-c-114_1034.md)
- [Engines > Motoped Engine options](https://tboltusa.com/store/engines-motoped-engine-options-c-114_927.md)
- [Engines > Pitster Pro Engines](https://tboltusa.com/store/engines-pitster-pro-engines-c-114_117.md)

Where a fitment line says "All", it means all years of the model named on that line, not all bikes.

## Description (the store's own text)

The new 155 Z high output will drop into just about any frame using CRF 50/70 motor mounts. New close ratio transmission to make grabbing gears easy with no lag. Serious race ready engine with very strong performance stock. TB V2 heads and 184cc kits tested very well with this engine and produce big gains!

**Key Features:**

- Externally removable oil filter
- Quick access clutch cover
- Super strong engine with the Daytona style outer ignition
- Can start in any gear with the clutch pulled in

**Kit Includes:**

- Air filter
- Clutch cable
- Shifter
- Kickstarter
- Outer rotor ignition with wiring harness, ignition coil and CDI box
- Oil cooler

**Note:** Must run oil cooler. Must run to engine block or use jumper line

**Note:** When upgrading your Honda XR50/70, CRF50/70 to this engine you may want to use order aftermarket footpeg mounts and tank spacers. Also we suggest using an aftermarket exhaust to obtain maximum performance. All of these items are available at TBoltUSA.com

Engine

- Displacement: 155cc
- Engine Type: Air Cooled, Single-Cylinder, 2-valve, 4-stroke
- Bore/Stroke: 60mm x 55mm
- Final Drive: Chain
- Fuel Delivery: Nibbi 24mm
- Fuel: Unleaded / 91 Octane
- Recommended Engine Oil: 10W-40 Petroleum Based (Nonsynthetic)

Ignition

- Kick Start: Yes
- Electric Start: No
- CDI: Yes
- Auxiliary Output: No

Transmission

- Transmission: 4-Speed manual, 4-Up
- Shift-Pattern: Four-speed Transmission: N-1-2-3-4
- Clutch: Rear 6 plate manual

## Shipping and returns

- Flat rate shipping is $8 for parts orders under $75 and free for most parts orders over $75, within the continental 48 states. Heavy items (engines, complete bikes, suspension) are excluded.
- This item ships with its own flat fee: $80.00 USD.
- Full shipping policy: [Shipping policies](https://tboltusa.com/store/shipping-policies-i-6.md)
- Returns: the store's own policy page says how returns, exchanges and cancellations work. Please read it before buying: [Returns, Exchanges and Cancellations](https://tboltusa.com/store/returns-exchanges-and-cancellations-i-11.md) The page begins: "All products returned to T Bolt USA must be reviewed and approved."

## How to buy

This item is out of stock, so it cannot go in the cart now (see Stock above).

Cart: [Shopping cart](https://tboltusa.com/store/shopping_cart.php)

## Photos

- [Photo 1](https://tboltusa.com/store/img/p/522/pitster-pro-155-engine-1.jpg)
- [Photo 2](https://tboltusa.com/store/img/p/522/pitster-pro-155-engine-2.jpg)
- [Photo 3](https://tboltusa.com/store/img/p/522/pitster-pro-155-engine-3.jpg)

## Support

Since 2004, every purchase from TBolt USA includes access to technical support from our staff of experts and our online [Pit Bike Technical Info Database](https://tboltusa.com/store/tbolt-usa-pit-bike-minimoto-technical-info-database-tech-15.md)!

We have all necessary support parts on hand.

*Most* orders ship same, or next business day, unless otherwise noted above.