16838-78 Top Quality Milled Cylinder Base Hardware
Fits: Big Twin | FX | FXR | Softail | Tou…
incl. VAT
Chapter members save 15% · Sign in for member pricing
Estimated delivery: 3–15 working days
Authorised
Iron City Dealer
14-Day Returns
Easy & hassle-free
Secure Checkout
256-bit encryption
Free UK Delivery
On orders over £100
Specifications
- Brand
- Colony
- Part Number
- 231599
- OEM Reference
- 16838-78
- Pack Quantity
- Each
- Category
- Cylinder Hardware
- VAT Rate
- 20%
About This Product
For a rock-solid top end, you need the strongest fasteners available. This Colony cylinder base hardware set features milled nuts and washers machined from high-grade steel, making them some of the toughest options on the market. Designed to fit Big Twin, FX, FXR, Softail, and Touring models, these fasteners provide the clamping force necessary to keep your cylinders properly seated under high pressure. This set is a direct replacement for OEM 16838-78 and is sold as a complete set to finish your build. Whether you are performing a routine top-end refresh or a full performance build, these milled fasteners offer both the durability and the professional finish your Harley-Davidson deserves.
Fitment
29 modelsBig Twin | FX | FXR | Softail | Touring
Fxr 4 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984 | DISC GLIDE FXRDG |
| Harley-Davidson | 1982–1984 | LOW RIDER FXRS |
| Harley-Davidson | 1983–1984 | SPORT GLIDE FXRT |
| Harley-Davidson | 1982–1983 | SUPER GLIDE FXR |
Softail 8 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1981–1982 | BLACKLINE FXS |
| Harley-Davidson | 1983–1984 | BREAKOUT FXSB |
| Harley-Davidson | 1984 | SOFTAIL STANDARD FXST |
| Harley-Davidson | 1981–1984 | SUPER GLIDE FXEF |
| Harley-Davidson | 1981–1982 | SUPER GLIDE FXB |
| Harley-Davidson | 1981–1984 | SUPER GLIDE FXE |
| Harley-Davidson | 1983 | SUPER GLIDE FXDG |
| Harley-Davidson | 1981–1984 | WIDE GLIDE FXWG |
Touring 17 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 1984 | Classic Tour Glide Classic (1984) Tour Glide Classic FLT Classic |
| Harley-Davidson | 1984 | Electra Glide (1984) Electra Glide FLHT |
| Harley-Davidson | 1983–1984 | ELECTRA GLIDE CLASSIC FLHTC |
| Harley-Davidson | 1981–1982 | ELECTRA GLIDE CLASSIC WITH SIDECAR FLHC WITH SIDECAR |
| Harley-Davidson | 1983–1984 | ELECTRA GLIDE CLASSIC WITH SIDECAR FLHTC WITH SIDECAR |
| Harley-Davidson | 1984 | ELECTRA GLIDE SPECIAL WITH SIDECAR FLHX WITH SIDECAR |
| Harley-Davidson | 1981–1984 | ELECTRA GLIDE SPORT FLHS |
| Harley-Davidson | 1981–1984 | ELECTRA GLIDE STANDARD SHRINE FLH SHRINE |
| Harley-Davidson | 1981–1982 | HERITAGE FLH-HERITAGE |
| Harley-Davidson | 1981–1982 | Heritage Classic FLHC |
| Harley-Davidson | 1981–1984 | Street Glide® FLHX |
| Harley-Davidson | 1981–1983 | TOUR GLIDE FLT |
| Harley-Davidson | 1980–1984 | TOUR GLIDE CLASSIC FLTC |
| Harley-Davidson | 1984 | TOUR GLIDE CLASSIC WITH SIDECAR FLTC WITH SIDECAR |
| Harley-Davidson | 1983 | TOUR GLIDE WITH SIDECAR FLT WITH SIDECAR |
| Harley-Davidson | 1983 | TOURING ELECTRA GLIDE STANDARD FLHT |
| Harley-Davidson | 1981–1984 | TOURING REVIVAL FLH |
Related Products
View all →
More from Colony
View all →
Who are we? Leeds Harley-Davidson - Iron City Motorcycles
This product is fulfilled by Iron City Motorcycles, Leeds' authorised Harley-Davidson® dealer, serving the UK with a full range of Genuine Motorclothes®, dealer merchandise, and official Harley-Davidson parts & accessories — available for UK and international delivery.
From OEM Parts to retro lifestyle wear to aftermarket stockits we have what you need to keep you riding all year round.
Use our official OEM parts finder to browse our full Genuine Harley-Davidson® Parts and our associated approved aftermarket catalogues.